diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 776de2c21..23ea23b80 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -182,10 +182,14 @@ with modules beneath.
 
 If you are adding a new feature then please update the documentation.
 
-If you add a new flag, then if it is a general flag, document it in
+If you add a new general flag (not for a backend), then document it in
 `docs/content/docs.md` - the flags there are supposed to be in
-alphabetical order.  If it is a remote specific flag, then document it
-in `docs/content/remote.md`.
+alphabetical order.
+
+If you add a new backend option/flag, then it should be documented in
+the source file in the `Help:` field.  The first line of this is used
+for the flag help, the remainder is shown to the user in `rclone
+config` and is added to the docs with `make backenddocs`.
 
 The only documentation you need to edit are the `docs/content/*.md`
 files.  The MANUAL.*, rclone.1, web site etc are all auto generated
@@ -355,7 +359,7 @@ See the [testing](#testing) section for more information on integration tests.
 Add your fs to the docs - you'll need to pick an icon for it from [fontawesome](http://fontawesome.io/icons/).  Keep lists of remotes in alphabetical order but with the local file system last.
 
   * `README.md` - main Github page
-  * `docs/content/remote.md` - main docs page
+  * `docs/content/remote.md` - main docs page (note the backend options are automatically added to this file with `make backenddocs`)
   * `docs/content/overview.md` - overview docs
   * `docs/content/docs.md` - list of remotes in config section
   * `docs/content/about.md` - front page of rclone.org
diff --git a/Makefile b/Makefile
index 805ae6ea6..b2a6c79a1 100644
--- a/Makefile
+++ b/Makefile
@@ -107,7 +107,7 @@ doc:	rclone.1 MANUAL.html MANUAL.txt rcdocs commanddocs
 rclone.1:	MANUAL.md
 	pandoc -s --from markdown --to man MANUAL.md -o rclone.1
 
-MANUAL.md:	bin/make_manual.py docs/content/*.md commanddocs
+MANUAL.md:	bin/make_manual.py docs/content/*.md commanddocs backenddocs
 	./bin/make_manual.py
 
 MANUAL.html:	MANUAL.md
@@ -119,6 +119,9 @@ MANUAL.txt:	MANUAL.md
 commanddocs: rclone
 	rclone gendocs docs/content/commands/
 
+backenddocs: rclone bin/make_backend_docs.py
+	./bin/make_backend_docs.py
+
 rcdocs: rclone
 	bin/make_rc_docs.sh
 
diff --git a/bin/make_backend_docs.py b/bin/make_backend_docs.py
new file mode 100755
index 000000000..79934c2e9
--- /dev/null
+++ b/bin/make_backend_docs.py
@@ -0,0 +1,67 @@
+#!/usr/bin/env python
+"""
+Make backend documentation
+"""
+
+import os
+import subprocess
+
+marker = "<!--- autogenerated options"
+start = marker + " start"
+stop = marker + " stop"
+
+# directory name to backend name
+dir_to_backend = {
+    "googlecloudstorage": "google cloud storage",
+    "amazonclouddrive": "amazon cloud drive",
+}
+
+def find_backends():
+    """Return a list of all backends"""
+    return [ x for x in os.listdir("backend") if x not in ("all",) ]
+
+def output_docs(backend, out):
+    """Output documentation for backend options to out"""
+    backend = dir_to_backend.get(backend, backend)
+    out.flush()
+    subprocess.check_call(["rclone", "help", "backend", backend], stdout=out)
+
+def alter_doc(backend):
+    """Alter the documentation for backend"""
+    doc_file = "docs/content/"+backend+".md"
+    if not os.path.exists(doc_file):
+        raise ValueError("Didn't find doc file %s" % (doc_file,))
+    new_file = doc_file+"~new~"
+    altered = False
+    with open(doc_file, "r") as in_file, open(new_file, "w") as out_file:
+        in_docs = False
+        for line in in_file:
+            if not in_docs:
+                if start in line:
+                    in_docs = True
+                    start_full = start + " - DO NOT EDIT, instead edit fs.RegInfo in backend/%s/%s.go then run make backenddocs -->\n" % (backend, backend)
+                    out_file.write(start_full)
+                    output_docs(backend, out_file)
+                    out_file.write(stop+" -->\n")
+                    altered = True
+            if not in_docs:
+                out_file.write(line)
+            if in_docs:
+                if stop in line:
+                    in_docs = False
+    os.rename(doc_file, doc_file+"~")
+    os.rename(new_file, doc_file)
+    if not altered:
+        raise ValueError("Didn't find '%s' markers for in %s" % (start, doc_file))
+
+if __name__ == "__main__":
+    failed, success = 0, 0
+    for backend in find_backends():
+        try:
+            alter_doc(backend)
+        except Exception, e:
+            print "Failed adding docs for %s backend: %s" % (backend, e)
+            failed += 1
+        else:
+            success += 1
+    print "Added docs for %d backends with %d failures" % (success, failed)
diff --git a/docs/content/alias.md b/docs/content/alias.md
index 8a0d1b744..24a3cf897 100644
--- a/docs/content/alias.md
+++ b/docs/content/alias.md
@@ -128,5 +128,19 @@ Copy another local directory to the alias directory called source
 
     rclone copy /home/source remote:source
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/alias/alias.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to alias (Alias for a existing remote).
+
+#### --alias-remote
+
+Remote or path to alias.
+Can be "myremote:path/to/dir", "myremote:bucket", "myremote:" or "/local/path".
+
+- Config:      remote
+- Env Var:     RCLONE_ALIAS_REMOTE
+- Type:        string
+- Default:     ""
+
+<!--- autogenerated options stop -->
diff --git a/docs/content/amazonclouddrive.md b/docs/content/amazonclouddrive.md
index 52f115745..b9c15f81d 100644
--- a/docs/content/amazonclouddrive.md
+++ b/docs/content/amazonclouddrive.md
@@ -173,8 +173,110 @@ Let's say you usually use `amazon.co.uk`. When you authenticate with
 rclone it will take you to an `amazon.com` page to log in.  Your
 `amazon.co.uk` email and password should work here just fine.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/amazonclouddrive/amazonclouddrive.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to amazon cloud drive (Amazon Drive).
+
+#### --acd-client-id
+
+Amazon Application Client ID.
+
+- Config:      client_id
+- Env Var:     RCLONE_ACD_CLIENT_ID
+- Type:        string
+- Default:     ""
+
+#### --acd-client-secret
+
+Amazon Application Client Secret.
+
+- Config:      client_secret
+- Env Var:     RCLONE_ACD_CLIENT_SECRET
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to amazon cloud drive (Amazon Drive).
+
+#### --acd-auth-url
+
+Auth server URL.
+Leave blank to use Amazon's.
+
+- Config:      auth_url
+- Env Var:     RCLONE_ACD_AUTH_URL
+- Type:        string
+- Default:     ""
+
+#### --acd-token-url
+
+Token server url.
+leave blank to use Amazon's.
+
+- Config:      token_url
+- Env Var:     RCLONE_ACD_TOKEN_URL
+- Type:        string
+- Default:     ""
+
+#### --acd-checkpoint
+
+Checkpoint for internal polling (debug).
+
+- Config:      checkpoint
+- Env Var:     RCLONE_ACD_CHECKPOINT
+- Type:        string
+- Default:     ""
+
+#### --acd-upload-wait-per-gb
+
+Additional time per GB to wait after a failed complete upload to see if it appears.
+
+Sometimes Amazon Drive gives an error when a file has been fully
+uploaded but the file appears anyway after a little while.  This
+happens sometimes for files over 1GB in size and nearly every time for
+files bigger than 10GB. This parameter controls the time rclone waits
+for the file to appear.
+
+The default value for this parameter is 3 minutes per GB, so by
+default it will wait 3 minutes for every GB uploaded to see if the
+file appears.
+
+You can disable this feature by setting it to 0. This may cause
+conflict errors as rclone retries the failed upload but the file will
+most likely appear correctly eventually.
+
+These values were determined empirically by observing lots of uploads
+of big files for a range of file sizes.
+
+Upload with the "-v" flag to see more info about what rclone is doing
+in this situation.
+
+- Config:      upload_wait_per_gb
+- Env Var:     RCLONE_ACD_UPLOAD_WAIT_PER_GB
+- Type:        Duration
+- Default:     3m0s
+
+#### --acd-templink-threshold
+
+Files >= this size will be downloaded via their tempLink.
+
+Files this size or more will be downloaded via their "tempLink". This
+is to work around a problem with Amazon Drive which blocks downloads
+of files bigger than about 10GB.  The default for this is 9GB which
+shouldn't need to be changed.
+
+To download files above this threshold, rclone requests a "tempLink"
+which downloads the file through a temporary URL directly from the
+underlying S3 storage.
+
+- Config:      templink_threshold
+- Env Var:     RCLONE_ACD_TEMPLINK_THRESHOLD
+- Type:        SizeSuffix
+- Default:     9G
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/azureblob.md b/docs/content/azureblob.md
index e0a93af65..740239b5b 100644
--- a/docs/content/azureblob.md
+++ b/docs/content/azureblob.md
@@ -168,8 +168,112 @@ upload which means that there is a limit of 9.5TB of multipart uploads
 in progress as Azure won't allow more than that amount of uncommitted
 blocks.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/azureblob/azureblob.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to azureblob (Microsoft Azure Blob Storage).
+
+#### --azureblob-account
+
+Storage Account Name (leave blank to use connection string or SAS URL)
+
+- Config:      account
+- Env Var:     RCLONE_AZUREBLOB_ACCOUNT
+- Type:        string
+- Default:     ""
+
+#### --azureblob-key
+
+Storage Account Key (leave blank to use connection string or SAS URL)
+
+- Config:      key
+- Env Var:     RCLONE_AZUREBLOB_KEY
+- Type:        string
+- Default:     ""
+
+#### --azureblob-sas-url
+
+SAS URL for container level access only
+(leave blank if using account/key or connection string)
+
+- Config:      sas_url
+- Env Var:     RCLONE_AZUREBLOB_SAS_URL
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to azureblob (Microsoft Azure Blob Storage).
+
+#### --azureblob-endpoint
+
+Endpoint for the service
+Leave blank normally.
+
+- Config:      endpoint
+- Env Var:     RCLONE_AZUREBLOB_ENDPOINT
+- Type:        string
+- Default:     ""
+
+#### --azureblob-upload-cutoff
+
+Cutoff for switching to chunked upload (<= 256MB).
+
+- Config:      upload_cutoff
+- Env Var:     RCLONE_AZUREBLOB_UPLOAD_CUTOFF
+- Type:        SizeSuffix
+- Default:     256M
+
+#### --azureblob-chunk-size
+
+Upload chunk size (<= 100MB).
+
+Note that this is stored in memory and there may be up to
+"--transfers" chunks stored at once in memory.
+
+- Config:      chunk_size
+- Env Var:     RCLONE_AZUREBLOB_CHUNK_SIZE
+- Type:        SizeSuffix
+- Default:     4M
+
+#### --azureblob-list-chunk
+
+Size of blob list.
+
+This sets the number of blobs requested in each listing chunk. Default
+is the maximum, 5000. "List blobs" requests are permitted 2 minutes
+per megabyte to complete. If an operation is taking longer than 2
+minutes per megabyte on average, it will time out (
+[source](https://docs.microsoft.com/en-us/rest/api/storageservices/setting-timeouts-for-blob-service-operations#exceptions-to-default-timeout-interval)
+). This can be used to limit the number of blobs items to return, to
+avoid the time out.
+
+- Config:      list_chunk
+- Env Var:     RCLONE_AZUREBLOB_LIST_CHUNK
+- Type:        int
+- Default:     5000
+
+#### --azureblob-access-tier
+
+Access tier of blob: hot, cool or archive.
+
+Archived blobs can be restored by setting access tier to hot or
+cool. Leave blank if you intend to use default access tier, which is
+set at account level
+
+If there is no "access tier" specified, rclone doesn't apply any tier.
+rclone performs "Set Tier" operation on blobs while uploading, if objects
+are not modified, specifying "access tier" to new one will have no effect.
+If blobs are in "archive tier" at remote, trying to perform data transfer
+operations from remote will not be allowed. User should first restore by
+tiering blob to "Hot" or "Cool".
+
+- Config:      access_tier
+- Env Var:     RCLONE_AZUREBLOB_ACCESS_TIER
+- Type:        string
+- Default:     ""
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/b2.md b/docs/content/b2.md
index c7b4ac87a..708423f26 100644
--- a/docs/content/b2.md
+++ b/docs/content/b2.md
@@ -294,6 +294,108 @@ server to the nearest millisecond appended to them.
 Note that when using `--b2-versions` no file write operations are
 permitted, so you can't upload files or delete them.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/b2/b2.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to b2 (Backblaze B2).
+
+#### --b2-account
+
+Account ID or Application Key ID
+
+- Config:      account
+- Env Var:     RCLONE_B2_ACCOUNT
+- Type:        string
+- Default:     ""
+
+#### --b2-key
+
+Application Key
+
+- Config:      key
+- Env Var:     RCLONE_B2_KEY
+- Type:        string
+- Default:     ""
+
+#### --b2-hard-delete
+
+Permanently delete files on remote removal, otherwise hide files.
+
+- Config:      hard_delete
+- Env Var:     RCLONE_B2_HARD_DELETE
+- Type:        bool
+- Default:     false
+
+### Advanced Options
+
+Here are the advanced options specific to b2 (Backblaze B2).
+
+#### --b2-endpoint
+
+Endpoint for the service.
+Leave blank normally.
+
+- Config:      endpoint
+- Env Var:     RCLONE_B2_ENDPOINT
+- Type:        string
+- Default:     ""
+
+#### --b2-test-mode
+
+A flag string for X-Bz-Test-Mode header for debugging.
+
+This is for debugging purposes only. Setting it to one of the strings
+below will cause b2 to return specific errors:
+
+  * "fail_some_uploads"
+  * "expire_some_account_authorization_tokens"
+  * "force_cap_exceeded"
+
+These will be set in the "X-Bz-Test-Mode" header which is documented
+in the [b2 integrations checklist](https://www.backblaze.com/b2/docs/integration_checklist.html).
+
+- Config:      test_mode
+- Env Var:     RCLONE_B2_TEST_MODE
+- Type:        string
+- Default:     ""
+
+#### --b2-versions
+
+Include old versions in directory listings.
+Note that when using this no file write operations are permitted,
+so you can't upload files or delete them.
+
+- Config:      versions
+- Env Var:     RCLONE_B2_VERSIONS
+- Type:        bool
+- Default:     false
+
+#### --b2-upload-cutoff
+
+Cutoff for switching to chunked upload.
+
+Files above this size will be uploaded in chunks of "--b2-chunk-size".
+
+This value should be set no larger than 4.657GiB (== 5GB).
+
+- Config:      upload_cutoff
+- Env Var:     RCLONE_B2_UPLOAD_CUTOFF
+- Type:        SizeSuffix
+- Default:     190.735M
+
+#### --b2-chunk-size
+
+Upload chunk size. Must fit in memory.
+
+When uploading large files, chunk the file into this size.  Note that
+these chunks are buffered in memory and there might a maximum of
+"--transfers" chunks in progress at once.  5,000,000 Bytes is the
+minimim size.
+
+- Config:      chunk_size
+- Env Var:     RCLONE_B2_CHUNK_SIZE
+- Type:        SizeSuffix
+- Default:     96M
+
+<!--- autogenerated options stop -->
 
diff --git a/docs/content/box.md b/docs/content/box.md
index eaa688c85..87c6ccfe3 100644
--- a/docs/content/box.md
+++ b/docs/content/box.md
@@ -217,8 +217,54 @@ normally 8MB so increasing `--transfers` will increase memory use.
 Depending on the enterprise settings for your user, the item will
 either be actually deleted from Box or moved to the trash.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/box/box.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to box (Box).
+
+#### --box-client-id
+
+Box App Client Id.
+Leave blank normally.
+
+- Config:      client_id
+- Env Var:     RCLONE_BOX_CLIENT_ID
+- Type:        string
+- Default:     ""
+
+#### --box-client-secret
+
+Box App Client Secret
+Leave blank normally.
+
+- Config:      client_secret
+- Env Var:     RCLONE_BOX_CLIENT_SECRET
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to box (Box).
+
+#### --box-upload-cutoff
+
+Cutoff for switching to multipart upload (>= 50MB).
+
+- Config:      upload_cutoff
+- Env Var:     RCLONE_BOX_UPLOAD_CUTOFF
+- Type:        SizeSuffix
+- Default:     50M
+
+#### --box-commit-retries
+
+Max number of times to try committing a multipart file.
+
+- Config:      commit_retries
+- Env Var:     RCLONE_BOX_COMMIT_RETRIES
+- Type:        int
+- Default:     100
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/cache.md b/docs/content/cache.md
index 347db9e27..cc9bde8b5 100644
--- a/docs/content/cache.md
+++ b/docs/content/cache.md
@@ -290,5 +290,315 @@ Params:
   - **remote** = path to remote **(required)**
   - **withData** = true/false to delete cached data (chunks) as well _(optional, false by default)_
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/cache/cache.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to cache (Cache a remote).
+
+#### --cache-remote
+
+Remote to cache.
+Normally should contain a ':' and a path, eg "myremote:path/to/dir",
+"myremote:bucket" or maybe "myremote:" (not recommended).
+
+- Config:      remote
+- Env Var:     RCLONE_CACHE_REMOTE
+- Type:        string
+- Default:     ""
+
+#### --cache-plex-url
+
+The URL of the Plex server
+
+- Config:      plex_url
+- Env Var:     RCLONE_CACHE_PLEX_URL
+- Type:        string
+- Default:     ""
+
+#### --cache-plex-username
+
+The username of the Plex user
+
+- Config:      plex_username
+- Env Var:     RCLONE_CACHE_PLEX_USERNAME
+- Type:        string
+- Default:     ""
+
+#### --cache-plex-password
+
+The password of the Plex user
+
+- Config:      plex_password
+- Env Var:     RCLONE_CACHE_PLEX_PASSWORD
+- Type:        string
+- Default:     ""
+
+#### --cache-chunk-size
+
+The size of a chunk (partial file data).
+
+Use lower numbers for slower connections. If the chunk size is
+changed, any downloaded chunks will be invalid and cache-chunk-path
+will need to be cleared or unexpected EOF errors will occur.
+
+- Config:      chunk_size
+- Env Var:     RCLONE_CACHE_CHUNK_SIZE
+- Type:        SizeSuffix
+- Default:     5M
+- Examples:
+    - "1m"
+        - 1MB
+    - "5M"
+        - 5 MB
+    - "10M"
+        - 10 MB
+
+#### --cache-info-age
+
+How long to cache file structure information (directory listings, file size, times etc). 
+If all write operations are done through the cache then you can safely make
+this value very large as the cache store will also be updated in real time.
+
+- Config:      info_age
+- Env Var:     RCLONE_CACHE_INFO_AGE
+- Type:        Duration
+- Default:     6h0m0s
+- Examples:
+    - "1h"
+        - 1 hour
+    - "24h"
+        - 24 hours
+    - "48h"
+        - 48 hours
+
+#### --cache-chunk-total-size
+
+The total size that the chunks can take up on the local disk.
+
+If the cache exceeds this value then it will start to delete the
+oldest chunks until it goes under this value.
+
+- Config:      chunk_total_size
+- Env Var:     RCLONE_CACHE_CHUNK_TOTAL_SIZE
+- Type:        SizeSuffix
+- Default:     10G
+- Examples:
+    - "500M"
+        - 500 MB
+    - "1G"
+        - 1 GB
+    - "10G"
+        - 10 GB
+
+### Advanced Options
+
+Here are the advanced options specific to cache (Cache a remote).
+
+#### --cache-plex-token
+
+The plex token for authentication - auto set normally
+
+- Config:      plex_token
+- Env Var:     RCLONE_CACHE_PLEX_TOKEN
+- Type:        string
+- Default:     ""
+
+#### --cache-plex-insecure
+
+Skip all certificate verifications when connecting to the Plex server
+
+- Config:      plex_insecure
+- Env Var:     RCLONE_CACHE_PLEX_INSECURE
+- Type:        string
+- Default:     ""
+
+#### --cache-db-path
+
+Directory to store file structure metadata DB.
+The remote name is used as the DB file name.
+
+- Config:      db_path
+- Env Var:     RCLONE_CACHE_DB_PATH
+- Type:        string
+- Default:     "/home/ncw/.cache/rclone/cache-backend"
+
+#### --cache-chunk-path
+
+Directory to cache chunk files.
+
+Path to where partial file data (chunks) are stored locally. The remote
+name is appended to the final path.
+
+This config follows the "--cache-db-path". If you specify a custom
+location for "--cache-db-path" and don't specify one for "--cache-chunk-path"
+then "--cache-chunk-path" will use the same path as "--cache-db-path".
+
+- Config:      chunk_path
+- Env Var:     RCLONE_CACHE_CHUNK_PATH
+- Type:        string
+- Default:     "/home/ncw/.cache/rclone/cache-backend"
+
+#### --cache-db-purge
+
+Clear all the cached data for this remote on start.
+
+- Config:      db_purge
+- Env Var:     RCLONE_CACHE_DB_PURGE
+- Type:        bool
+- Default:     false
+
+#### --cache-chunk-clean-interval
+
+How often should the cache perform cleanups of the chunk storage.
+The default value should be ok for most people. If you find that the
+cache goes over "cache-chunk-total-size" too often then try to lower
+this value to force it to perform cleanups more often.
+
+- Config:      chunk_clean_interval
+- Env Var:     RCLONE_CACHE_CHUNK_CLEAN_INTERVAL
+- Type:        Duration
+- Default:     1m0s
+
+#### --cache-read-retries
+
+How many times to retry a read from a cache storage.
+
+Since reading from a cache stream is independent from downloading file
+data, readers can get to a point where there's no more data in the
+cache.  Most of the times this can indicate a connectivity issue if
+cache isn't able to provide file data anymore.
+
+For really slow connections, increase this to a point where the stream is
+able to provide data but your experience will be very stuttering.
+
+- Config:      read_retries
+- Env Var:     RCLONE_CACHE_READ_RETRIES
+- Type:        int
+- Default:     10
+
+#### --cache-workers
+
+How many workers should run in parallel to download chunks.
+
+Higher values will mean more parallel processing (better CPU needed)
+and more concurrent requests on the cloud provider.  This impacts
+several aspects like the cloud provider API limits, more stress on the
+hardware that rclone runs on but it also means that streams will be
+more fluid and data will be available much more faster to readers.
+
+**Note**: If the optional Plex integration is enabled then this
+setting will adapt to the type of reading performed and the value
+specified here will be used as a maximum number of workers to use.
+
+- Config:      workers
+- Env Var:     RCLONE_CACHE_WORKERS
+- Type:        int
+- Default:     4
+
+#### --cache-chunk-no-memory
+
+Disable the in-memory cache for storing chunks during streaming.
+
+By default, cache will keep file data during streaming in RAM as well
+to provide it to readers as fast as possible.
+
+This transient data is evicted as soon as it is read and the number of
+chunks stored doesn't exceed the number of workers. However, depending
+on other settings like "cache-chunk-size" and "cache-workers" this footprint
+can increase if there are parallel streams too (multiple files being read
+at the same time).
+
+If the hardware permits it, use this feature to provide an overall better
+performance during streaming but it can also be disabled if RAM is not
+available on the local machine.
+
+- Config:      chunk_no_memory
+- Env Var:     RCLONE_CACHE_CHUNK_NO_MEMORY
+- Type:        bool
+- Default:     false
+
+#### --cache-rps
+
+Limits the number of requests per second to the source FS (-1 to disable)
+
+This setting places a hard limit on the number of requests per second
+that cache will be doing to the cloud provider remote and try to
+respect that value by setting waits between reads.
+
+If you find that you're getting banned or limited on the cloud
+provider through cache and know that a smaller number of requests per
+second will allow you to work with it then you can use this setting
+for that.
+
+A good balance of all the other settings should make this setting
+useless but it is available to set for more special cases.
+
+**NOTE**: This will limit the number of requests during streams but
+other API calls to the cloud provider like directory listings will
+still pass.
+
+- Config:      rps
+- Env Var:     RCLONE_CACHE_RPS
+- Type:        int
+- Default:     -1
+
+#### --cache-writes
+
+Cache file data on writes through the FS
+
+If you need to read files immediately after you upload them through
+cache you can enable this flag to have their data stored in the
+cache store at the same time during upload.
+
+- Config:      writes
+- Env Var:     RCLONE_CACHE_WRITES
+- Type:        bool
+- Default:     false
+
+#### --cache-tmp-upload-path
+
+Directory to keep temporary files until they are uploaded.
+
+This is the path where cache will use as a temporary storage for new
+files that need to be uploaded to the cloud provider.
+
+Specifying a value will enable this feature. Without it, it is
+completely disabled and files will be uploaded directly to the cloud
+provider
+
+- Config:      tmp_upload_path
+- Env Var:     RCLONE_CACHE_TMP_UPLOAD_PATH
+- Type:        string
+- Default:     ""
+
+#### --cache-tmp-wait-time
+
+How long should files be stored in local cache before being uploaded
+
+This is the duration that a file must wait in the temporary location
+_cache-tmp-upload-path_ before it is selected for upload.
+
+Note that only one file is uploaded at a time and it can take longer
+to start the upload if a queue formed for this purpose.
+
+- Config:      tmp_wait_time
+- Env Var:     RCLONE_CACHE_TMP_WAIT_TIME
+- Type:        Duration
+- Default:     15s
+
+#### --cache-db-wait-time
+
+How long to wait for the DB to be available - 0 is unlimited
+
+Only one process can have the DB open at any one time, so rclone waits
+for this duration for the DB to become available before it gives an
+error.
+
+If you set it to 0 then it will wait forever.
+
+- Config:      db_wait_time
+- Env Var:     RCLONE_CACHE_DB_WAIT_TIME
+- Type:        Duration
+- Default:     1s
+
+<!--- autogenerated options stop -->
diff --git a/docs/content/crypt.md b/docs/content/crypt.md
index 5960c0615..c83f6852c 100644
--- a/docs/content/crypt.md
+++ b/docs/content/crypt.md
@@ -294,8 +294,93 @@ Note that you should use the `rclone cryptcheck` command to check the
 integrity of a crypted remote instead of `rclone check` which can't
 check the checksums properly.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/crypt/crypt.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to crypt (Encrypt/Decrypt a remote).
+
+#### --crypt-remote
+
+Remote to encrypt/decrypt.
+Normally should contain a ':' and a path, eg "myremote:path/to/dir",
+"myremote:bucket" or maybe "myremote:" (not recommended).
+
+- Config:      remote
+- Env Var:     RCLONE_CRYPT_REMOTE
+- Type:        string
+- Default:     ""
+
+#### --crypt-filename-encryption
+
+How to encrypt the filenames.
+
+- Config:      filename_encryption
+- Env Var:     RCLONE_CRYPT_FILENAME_ENCRYPTION
+- Type:        string
+- Default:     "standard"
+- Examples:
+    - "off"
+        - Don't encrypt the file names.  Adds a ".bin" extension only.
+    - "standard"
+        - Encrypt the filenames see the docs for the details.
+    - "obfuscate"
+        - Very simple filename obfuscation.
+
+#### --crypt-directory-name-encryption
+
+Option to either encrypt directory names or leave them intact.
+
+- Config:      directory_name_encryption
+- Env Var:     RCLONE_CRYPT_DIRECTORY_NAME_ENCRYPTION
+- Type:        bool
+- Default:     true
+- Examples:
+    - "true"
+        - Encrypt directory names.
+    - "false"
+        - Don't encrypt directory names, leave them intact.
+
+#### --crypt-password
+
+Password or pass phrase for encryption.
+
+- Config:      password
+- Env Var:     RCLONE_CRYPT_PASSWORD
+- Type:        string
+- Default:     ""
+
+#### --crypt-password2
+
+Password or pass phrase for salt. Optional but recommended.
+Should be different to the previous password.
+
+- Config:      password2
+- Env Var:     RCLONE_CRYPT_PASSWORD2
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to crypt (Encrypt/Decrypt a remote).
+
+#### --crypt-show-mapping
+
+For all files listed show how the names encrypt.
+
+If this flag is set then for each file that the remote is asked to
+list, it will log (at level INFO) a line stating the decrypted file
+name and the encrypted file name.
+
+This is so you can work out which encrypted names are which decrypted
+names just in case you need to do something with the encrypted file
+names, or for debugging purposes.
+
+- Config:      show_mapping
+- Env Var:     RCLONE_CRYPT_SHOW_MAPPING
+- Type:        bool
+- Default:     false
+
+<!--- autogenerated options stop -->
 
 ## Backing up a crypted remote ##
 
diff --git a/docs/content/drive.md b/docs/content/drive.md
index 42b6a5e75..6d9b3e16f 100644
--- a/docs/content/drive.md
+++ b/docs/content/drive.md
@@ -483,8 +483,311 @@ Google Documents.
 | url | INI style link file | macOS, Windows |
 | webloc | macOS specific XML format | macOS |
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/drive/drive.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to drive (Google Drive).
+
+#### --drive-client-id
+
+Google Application Client Id
+Leave blank normally.
+
+- Config:      client_id
+- Env Var:     RCLONE_DRIVE_CLIENT_ID
+- Type:        string
+- Default:     ""
+
+#### --drive-client-secret
+
+Google Application Client Secret
+Leave blank normally.
+
+- Config:      client_secret
+- Env Var:     RCLONE_DRIVE_CLIENT_SECRET
+- Type:        string
+- Default:     ""
+
+#### --drive-scope
+
+Scope that rclone should use when requesting access from drive.
+
+- Config:      scope
+- Env Var:     RCLONE_DRIVE_SCOPE
+- Type:        string
+- Default:     ""
+- Examples:
+    - "drive"
+        - Full access all files, excluding Application Data Folder.
+    - "drive.readonly"
+        - Read-only access to file metadata and file contents.
+    - "drive.file"
+        - Access to files created by rclone only.
+        - These are visible in the drive website.
+        - File authorization is revoked when the user deauthorizes the app.
+    - "drive.appfolder"
+        - Allows read and write access to the Application Data folder.
+        - This is not visible in the drive website.
+    - "drive.metadata.readonly"
+        - Allows read-only access to file metadata but
+        - does not allow any access to read or download file content.
+
+#### --drive-root-folder-id
+
+ID of the root folder
+Leave blank normally.
+Fill in to access "Computers" folders. (see docs).
+
+- Config:      root_folder_id
+- Env Var:     RCLONE_DRIVE_ROOT_FOLDER_ID
+- Type:        string
+- Default:     ""
+
+#### --drive-service-account-file
+
+Service Account Credentials JSON file path 
+Leave blank normally.
+Needed only if you want use SA instead of interactive login.
+
+- Config:      service_account_file
+- Env Var:     RCLONE_DRIVE_SERVICE_ACCOUNT_FILE
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to drive (Google Drive).
+
+#### --drive-service-account-credentials
+
+Service Account Credentials JSON blob
+Leave blank normally.
+Needed only if you want use SA instead of interactive login.
+
+- Config:      service_account_credentials
+- Env Var:     RCLONE_DRIVE_SERVICE_ACCOUNT_CREDENTIALS
+- Type:        string
+- Default:     ""
+
+#### --drive-team-drive
+
+ID of the Team Drive
+
+- Config:      team_drive
+- Env Var:     RCLONE_DRIVE_TEAM_DRIVE
+- Type:        string
+- Default:     ""
+
+#### --drive-auth-owner-only
+
+Only consider files owned by the authenticated user.
+
+- Config:      auth_owner_only
+- Env Var:     RCLONE_DRIVE_AUTH_OWNER_ONLY
+- Type:        bool
+- Default:     false
+
+#### --drive-use-trash
+
+Send files to the trash instead of deleting permanently.
+Defaults to true, namely sending files to the trash.
+Use `--drive-use-trash=false` to delete files permanently instead.
+
+- Config:      use_trash
+- Env Var:     RCLONE_DRIVE_USE_TRASH
+- Type:        bool
+- Default:     true
+
+#### --drive-skip-gdocs
+
+Skip google documents in all listings.
+If given, gdocs practically become invisible to rclone.
+
+- Config:      skip_gdocs
+- Env Var:     RCLONE_DRIVE_SKIP_GDOCS
+- Type:        bool
+- Default:     false
+
+#### --drive-shared-with-me
+
+Only show files that are shared with me.
+
+Instructs rclone to operate on your "Shared with me" folder (where
+Google Drive lets you access the files and folders others have shared
+with you).
+
+This works both with the "list" (lsd, lsl, etc) and the "copy"
+commands (copy, sync, etc), and with all other commands too.
+
+- Config:      shared_with_me
+- Env Var:     RCLONE_DRIVE_SHARED_WITH_ME
+- Type:        bool
+- Default:     false
+
+#### --drive-trashed-only
+
+Only show files that are in the trash.
+This will show trashed files in their original directory structure.
+
+- Config:      trashed_only
+- Env Var:     RCLONE_DRIVE_TRASHED_ONLY
+- Type:        bool
+- Default:     false
+
+#### --drive-formats
+
+Deprecated: see export_formats
+
+- Config:      formats
+- Env Var:     RCLONE_DRIVE_FORMATS
+- Type:        string
+- Default:     ""
+
+#### --drive-export-formats
+
+Comma separated list of preferred formats for downloading Google docs.
+
+- Config:      export_formats
+- Env Var:     RCLONE_DRIVE_EXPORT_FORMATS
+- Type:        string
+- Default:     "docx,xlsx,pptx,svg"
+
+#### --drive-import-formats
+
+Comma separated list of preferred formats for uploading Google docs.
+
+- Config:      import_formats
+- Env Var:     RCLONE_DRIVE_IMPORT_FORMATS
+- Type:        string
+- Default:     ""
+
+#### --drive-allow-import-name-change
+
+Allow the filetype to change when uploading Google docs (e.g. file.doc to file.docx). This will confuse sync and reupload every time.
+
+- Config:      allow_import_name_change
+- Env Var:     RCLONE_DRIVE_ALLOW_IMPORT_NAME_CHANGE
+- Type:        bool
+- Default:     false
+
+#### --drive-use-created-date
+
+Use file created date instead of modified date.,
+
+Useful when downloading data and you want the creation date used in
+place of the last modified date.
+
+**WARNING**: This flag may have some unexpected consequences.
+
+When uploading to your drive all files will be overwritten unless they
+haven't been modified since their creation. And the inverse will occur
+while downloading.  This side effect can be avoided by using the
+"--checksum" flag.
+
+This feature was implemented to retain photos capture date as recorded
+by google photos. You will first need to check the "Create a Google
+Photos folder" option in your google drive settings. You can then copy
+or move the photos locally and use the date the image was taken
+(created) set as the modification date.
+
+- Config:      use_created_date
+- Env Var:     RCLONE_DRIVE_USE_CREATED_DATE
+- Type:        bool
+- Default:     false
+
+#### --drive-list-chunk
+
+Size of listing chunk 100-1000. 0 to disable.
+
+- Config:      list_chunk
+- Env Var:     RCLONE_DRIVE_LIST_CHUNK
+- Type:        int
+- Default:     1000
+
+#### --drive-impersonate
+
+Impersonate this user when using a service account.
+
+- Config:      impersonate
+- Env Var:     RCLONE_DRIVE_IMPERSONATE
+- Type:        string
+- Default:     ""
+
+#### --drive-alternate-export
+
+Use alternate export URLs for google documents export.,
+
+If this option is set this instructs rclone to use an alternate set of
+export URLs for drive documents.  Users have reported that the
+official export URLs can't export large documents, whereas these
+unofficial ones can.
+
+See rclone issue [#2243](https://github.com/ncw/rclone/issues/2243) for background,
+[this google drive issue](https://issuetracker.google.com/issues/36761333) and
+[this helpful post](https://www.labnol.org/internet/direct-links-for-google-drive/28356/).
+
+- Config:      alternate_export
+- Env Var:     RCLONE_DRIVE_ALTERNATE_EXPORT
+- Type:        bool
+- Default:     false
+
+#### --drive-upload-cutoff
+
+Cutoff for switching to chunked upload
+
+- Config:      upload_cutoff
+- Env Var:     RCLONE_DRIVE_UPLOAD_CUTOFF
+- Type:        SizeSuffix
+- Default:     8M
+
+#### --drive-chunk-size
+
+Upload chunk size. Must a power of 2 >= 256k.
+
+Making this larger will improve performance, but note that each chunk
+is buffered in memory one per transfer.
+
+Reducing this will reduce memory usage but decrease performance.
+
+- Config:      chunk_size
+- Env Var:     RCLONE_DRIVE_CHUNK_SIZE
+- Type:        SizeSuffix
+- Default:     8M
+
+#### --drive-acknowledge-abuse
+
+Set to allow files which return cannotDownloadAbusiveFile to be downloaded.
+
+If downloading a file returns the error "This file has been identified
+as malware or spam and cannot be downloaded" with the error code
+"cannotDownloadAbusiveFile" then supply this flag to rclone to
+indicate you acknowledge the risks of downloading the file and rclone
+will download it anyway.
+
+- Config:      acknowledge_abuse
+- Env Var:     RCLONE_DRIVE_ACKNOWLEDGE_ABUSE
+- Type:        bool
+- Default:     false
+
+#### --drive-keep-revision-forever
+
+Keep new head revision of each file forever.
+
+- Config:      keep_revision_forever
+- Env Var:     RCLONE_DRIVE_KEEP_REVISION_FOREVER
+- Type:        bool
+- Default:     false
+
+#### --drive-v2-download-min-size
+
+If Object's are greater, use drive v2 API to download.
+
+- Config:      v2_download_min_size
+- Env Var:     RCLONE_DRIVE_V2_DOWNLOAD_MIN_SIZE
+- Type:        SizeSuffix
+- Default:     off
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/dropbox.md b/docs/content/dropbox.md
index f9bdb3d4b..2e51307ea 100644
--- a/docs/content/dropbox.md
+++ b/docs/content/dropbox.md
@@ -123,8 +123,52 @@ Dropbox supports [its own hash
 type](https://www.dropbox.com/developers/reference/content-hash) which
 is checked for all transfers.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/dropbox/dropbox.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to dropbox (Dropbox).
+
+#### --dropbox-client-id
+
+Dropbox App Client Id
+Leave blank normally.
+
+- Config:      client_id
+- Env Var:     RCLONE_DROPBOX_CLIENT_ID
+- Type:        string
+- Default:     ""
+
+#### --dropbox-client-secret
+
+Dropbox App Client Secret
+Leave blank normally.
+
+- Config:      client_secret
+- Env Var:     RCLONE_DROPBOX_CLIENT_SECRET
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to dropbox (Dropbox).
+
+#### --dropbox-chunk-size
+
+Upload chunk size. (< 150M).
+
+Any files larger than this will be uploaded in chunks of this size.
+
+Note that chunks are buffered in memory (one at a time) so rclone can
+deal with retries.  Setting this larger will increase the speed
+slightly (at most 10% for 128MB in tests) at the cost of using more
+memory.  It can be set smaller if you are tight on memory.
+
+- Config:      chunk_size
+- Env Var:     RCLONE_DROPBOX_CHUNK_SIZE
+- Type:        SizeSuffix
+- Default:     48M
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/ftp.md b/docs/content/ftp.md
index e7fda1014..09c0370f5 100644
--- a/docs/content/ftp.md
+++ b/docs/content/ftp.md
@@ -119,8 +119,51 @@ will be time of upload.
 
 FTP does not support any checksums.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/ftp/ftp.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to ftp (FTP Connection).
+
+#### --ftp-host
+
+FTP host to connect to
+
+- Config:      host
+- Env Var:     RCLONE_FTP_HOST
+- Type:        string
+- Default:     ""
+- Examples:
+    - "ftp.example.com"
+        - Connect to ftp.example.com
+
+#### --ftp-user
+
+FTP username, leave blank for current username, ncw
+
+- Config:      user
+- Env Var:     RCLONE_FTP_USER
+- Type:        string
+- Default:     ""
+
+#### --ftp-port
+
+FTP port, leave blank to use default (21)
+
+- Config:      port
+- Env Var:     RCLONE_FTP_PORT
+- Type:        string
+- Default:     ""
+
+#### --ftp-pass
+
+FTP password
+
+- Config:      pass
+- Env Var:     RCLONE_FTP_PASS
+- Type:        string
+- Default:     ""
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/googlecloudstorage.md b/docs/content/googlecloudstorage.md
index 86af18cb7..36456fef3 100644
--- a/docs/content/googlecloudstorage.md
+++ b/docs/content/googlecloudstorage.md
@@ -229,5 +229,163 @@ Google google cloud storage stores md5sums natively and rclone stores
 modification times as metadata on the object, under the "mtime" key in
 RFC3339 format accurate to 1ns.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/googlecloudstorage/googlecloudstorage.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to google cloud storage (Google Cloud Storage (this is not Google Drive)).
+
+#### --gcs-client-id
+
+Google Application Client Id
+Leave blank normally.
+
+- Config:      client_id
+- Env Var:     RCLONE_GCS_CLIENT_ID
+- Type:        string
+- Default:     ""
+
+#### --gcs-client-secret
+
+Google Application Client Secret
+Leave blank normally.
+
+- Config:      client_secret
+- Env Var:     RCLONE_GCS_CLIENT_SECRET
+- Type:        string
+- Default:     ""
+
+#### --gcs-project-number
+
+Project number.
+Optional - needed only for list/create/delete buckets - see your developer console.
+
+- Config:      project_number
+- Env Var:     RCLONE_GCS_PROJECT_NUMBER
+- Type:        string
+- Default:     ""
+
+#### --gcs-service-account-file
+
+Service Account Credentials JSON file path
+Leave blank normally.
+Needed only if you want use SA instead of interactive login.
+
+- Config:      service_account_file
+- Env Var:     RCLONE_GCS_SERVICE_ACCOUNT_FILE
+- Type:        string
+- Default:     ""
+
+#### --gcs-service-account-credentials
+
+Service Account Credentials JSON blob
+Leave blank normally.
+Needed only if you want use SA instead of interactive login.
+
+- Config:      service_account_credentials
+- Env Var:     RCLONE_GCS_SERVICE_ACCOUNT_CREDENTIALS
+- Type:        string
+- Default:     ""
+
+#### --gcs-object-acl
+
+Access Control List for new objects.
+
+- Config:      object_acl
+- Env Var:     RCLONE_GCS_OBJECT_ACL
+- Type:        string
+- Default:     ""
+- Examples:
+    - "authenticatedRead"
+        - Object owner gets OWNER access, and all Authenticated Users get READER access.
+    - "bucketOwnerFullControl"
+        - Object owner gets OWNER access, and project team owners get OWNER access.
+    - "bucketOwnerRead"
+        - Object owner gets OWNER access, and project team owners get READER access.
+    - "private"
+        - Object owner gets OWNER access [default if left blank].
+    - "projectPrivate"
+        - Object owner gets OWNER access, and project team members get access according to their roles.
+    - "publicRead"
+        - Object owner gets OWNER access, and all Users get READER access.
+
+#### --gcs-bucket-acl
+
+Access Control List for new buckets.
+
+- Config:      bucket_acl
+- Env Var:     RCLONE_GCS_BUCKET_ACL
+- Type:        string
+- Default:     ""
+- Examples:
+    - "authenticatedRead"
+        - Project team owners get OWNER access, and all Authenticated Users get READER access.
+    - "private"
+        - Project team owners get OWNER access [default if left blank].
+    - "projectPrivate"
+        - Project team members get access according to their roles.
+    - "publicRead"
+        - Project team owners get OWNER access, and all Users get READER access.
+    - "publicReadWrite"
+        - Project team owners get OWNER access, and all Users get WRITER access.
+
+#### --gcs-location
+
+Location for the newly created buckets.
+
+- Config:      location
+- Env Var:     RCLONE_GCS_LOCATION
+- Type:        string
+- Default:     ""
+- Examples:
+    - ""
+        - Empty for default location (US).
+    - "asia"
+        - Multi-regional location for Asia.
+    - "eu"
+        - Multi-regional location for Europe.
+    - "us"
+        - Multi-regional location for United States.
+    - "asia-east1"
+        - Taiwan.
+    - "asia-northeast1"
+        - Tokyo.
+    - "asia-southeast1"
+        - Singapore.
+    - "australia-southeast1"
+        - Sydney.
+    - "europe-west1"
+        - Belgium.
+    - "europe-west2"
+        - London.
+    - "us-central1"
+        - Iowa.
+    - "us-east1"
+        - South Carolina.
+    - "us-east4"
+        - Northern Virginia.
+    - "us-west1"
+        - Oregon.
+
+#### --gcs-storage-class
+
+The storage class to use when storing objects in Google Cloud Storage.
+
+- Config:      storage_class
+- Env Var:     RCLONE_GCS_STORAGE_CLASS
+- Type:        string
+- Default:     ""
+- Examples:
+    - ""
+        - Default
+    - "MULTI_REGIONAL"
+        - Multi-regional storage class
+    - "REGIONAL"
+        - Regional storage class
+    - "NEARLINE"
+        - Nearline storage class
+    - "COLDLINE"
+        - Coldline storage class
+    - "DURABLE_REDUCED_AVAILABILITY"
+        - Durable reduced availability storage class
+
+<!--- autogenerated options stop -->
diff --git a/docs/content/http.md b/docs/content/http.md
index 4c0764453..383a0cdfe 100644
--- a/docs/content/http.md
+++ b/docs/content/http.md
@@ -126,5 +126,21 @@ without a config file:
 
     rclone lsd --http-url https://beta.rclone.org :http:
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/http/http.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to http (http Connection).
+
+#### --http-url
+
+URL of http host to connect to
+
+- Config:      url
+- Env Var:     RCLONE_HTTP_URL
+- Type:        string
+- Default:     ""
+- Examples:
+    - "https://example.com"
+        - Connect to example.com
+
+<!--- autogenerated options stop -->
diff --git a/docs/content/hubic.md b/docs/content/hubic.md
index da86c6480..99b22928f 100644
--- a/docs/content/hubic.md
+++ b/docs/content/hubic.md
@@ -128,8 +128,48 @@ amongst others) for storing the modification time for an object.
 Note that Hubic wraps the Swift backend, so most of the properties of
 are the same.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/hubic/hubic.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to hubic (Hubic).
+
+#### --hubic-client-id
+
+Hubic Client Id
+Leave blank normally.
+
+- Config:      client_id
+- Env Var:     RCLONE_HUBIC_CLIENT_ID
+- Type:        string
+- Default:     ""
+
+#### --hubic-client-secret
+
+Hubic Client Secret
+Leave blank normally.
+
+- Config:      client_secret
+- Env Var:     RCLONE_HUBIC_CLIENT_SECRET
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to hubic (Hubic).
+
+#### --hubic-chunk-size
+
+Above this size files will be chunked into a _segments container.
+
+Above this size files will be chunked into a _segments container.  The
+default for this is 5GB which is its maximum value.
+
+- Config:      chunk_size
+- Env Var:     RCLONE_HUBIC_CHUNK_SIZE
+- Type:        SizeSuffix
+- Default:     5G
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/jottacloud.md b/docs/content/jottacloud.md
index 258f6f7cc..3ebdf53c1 100644
--- a/docs/content/jottacloud.md
+++ b/docs/content/jottacloud.md
@@ -124,8 +124,76 @@ To view your current quota you can use the `rclone about remote:`
 command which will display your usage limit (unless it is unlimited)
 and the current usage.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/jottacloud/jottacloud.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to jottacloud (JottaCloud).
+
+#### --jottacloud-user
+
+User Name
+
+- Config:      user
+- Env Var:     RCLONE_JOTTACLOUD_USER
+- Type:        string
+- Default:     ""
+
+#### --jottacloud-pass
+
+Password.
+
+- Config:      pass
+- Env Var:     RCLONE_JOTTACLOUD_PASS
+- Type:        string
+- Default:     ""
+
+#### --jottacloud-mountpoint
+
+The mountpoint to use.
+
+- Config:      mountpoint
+- Env Var:     RCLONE_JOTTACLOUD_MOUNTPOINT
+- Type:        string
+- Default:     ""
+- Examples:
+    - "Sync"
+        - Will be synced by the official client.
+    - "Archive"
+        - Archive
+
+### Advanced Options
+
+Here are the advanced options specific to jottacloud (JottaCloud).
+
+#### --jottacloud-md5-memory-limit
+
+Files bigger than this will be cached on disk to calculate the MD5 if required.
+
+- Config:      md5_memory_limit
+- Env Var:     RCLONE_JOTTACLOUD_MD5_MEMORY_LIMIT
+- Type:        SizeSuffix
+- Default:     10M
+
+#### --jottacloud-hard-delete
+
+Delete files permanently rather than putting them into the trash.
+
+- Config:      hard_delete
+- Env Var:     RCLONE_JOTTACLOUD_HARD_DELETE
+- Type:        bool
+- Default:     false
+
+#### --jottacloud-unlink
+
+Remove existing public link to file/folder with link command rather than creating.
+Default is false, meaning link command will create or retrieve public link.
+
+- Config:      unlink
+- Env Var:     RCLONE_JOTTACLOUD_UNLINK
+- Type:        bool
+- Default:     false
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/local.md b/docs/content/local.md
index 88936cee4..2fba21153 100644
--- a/docs/content/local.md
+++ b/docs/content/local.md
@@ -159,5 +159,84 @@ filesystem.
 **NB** This flag is only available on Unix based systems.  On systems
 where it isn't supported (eg Windows) it will be ignored.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/local/local.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to local (Local Disk).
+
+#### --local-nounc
+
+Disable UNC (long path names) conversion on Windows
+
+- Config:      nounc
+- Env Var:     RCLONE_LOCAL_NOUNC
+- Type:        string
+- Default:     ""
+- Examples:
+    - "true"
+        - Disables long file names
+
+### Advanced Options
+
+Here are the advanced options specific to local (Local Disk).
+
+#### --copy-links
+
+Follow symlinks and copy the pointed to item.
+
+- Config:      copy_links
+- Env Var:     RCLONE_LOCAL_COPY_LINKS
+- Type:        bool
+- Default:     false
+
+#### --skip-links
+
+Don't warn about skipped symlinks.
+This flag disables warning messages on skipped symlinks or junction
+points, as you explicitly acknowledge that they should be skipped.
+
+- Config:      skip_links
+- Env Var:     RCLONE_LOCAL_SKIP_LINKS
+- Type:        bool
+- Default:     false
+
+#### --local-no-unicode-normalization
+
+Don't apply unicode normalization to paths and filenames (Deprecated)
+
+This flag is deprecated now.  Rclone no longer normalizes unicode file
+names, but it compares them with unicode normalization in the sync
+routine instead.
+
+- Config:      no_unicode_normalization
+- Env Var:     RCLONE_LOCAL_NO_UNICODE_NORMALIZATION
+- Type:        bool
+- Default:     false
+
+#### --local-no-check-updated
+
+Don't check to see if the files change during upload
+
+Normally rclone checks the size and modification time of files as they
+are being uploaded and aborts with a message which starts "can't copy
+- source file is being updated" if the file changes during upload.
+
+However on some file systems this modification time check may fail (eg
+[Glusterfs #2206](https://github.com/ncw/rclone/issues/2206)) so this
+check can be disabled with this flag.
+
+- Config:      no_check_updated
+- Env Var:     RCLONE_LOCAL_NO_CHECK_UPDATED
+- Type:        bool
+- Default:     false
+
+#### --one-file-system
+
+Don't cross filesystem boundaries (unix/macOS only).
+
+- Config:      one_file_system
+- Env Var:     RCLONE_LOCAL_ONE_FILE_SYSTEM
+- Type:        bool
+- Default:     false
+
+<!--- autogenerated options stop -->
diff --git a/docs/content/mega.md b/docs/content/mega.md
index 782213911..a050a19a3 100644
--- a/docs/content/mega.md
+++ b/docs/content/mega.md
@@ -96,8 +96,59 @@ messages in the log about duplicates.
 
 Use `rclone dedupe` to fix duplicated files.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/mega/mega.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to mega (Mega).
+
+#### --mega-user
+
+User name
+
+- Config:      user
+- Env Var:     RCLONE_MEGA_USER
+- Type:        string
+- Default:     ""
+
+#### --mega-pass
+
+Password.
+
+- Config:      pass
+- Env Var:     RCLONE_MEGA_PASS
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to mega (Mega).
+
+#### --mega-debug
+
+Output more debug from Mega.
+
+If this flag is set (along with -vv) it will print further debugging
+information from the mega backend.
+
+- Config:      debug
+- Env Var:     RCLONE_MEGA_DEBUG
+- Type:        bool
+- Default:     false
+
+#### --mega-hard-delete
+
+Delete files permanently rather than putting them into the trash.
+
+Normally the mega backend will put all deletions into the trash rather
+than permanently deleting them.  If you specify this then rclone will
+permanently delete objects instead.
+
+- Config:      hard_delete
+- Env Var:     RCLONE_MEGA_HARD_DELETE
+- Type:        bool
+- Default:     false
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/onedrive.md b/docs/content/onedrive.md
index add6b9d68..afc6b7f81 100644
--- a/docs/content/onedrive.md
+++ b/docs/content/onedrive.md
@@ -155,8 +155,81 @@ doesn't provide an API to permanently delete files, nor to empty the
 trash, so you will have to do that with one of Microsoft's apps or via
 the OneDrive website.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/onedrive/onedrive.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to onedrive (Microsoft OneDrive).
+
+#### --onedrive-client-id
+
+Microsoft App Client Id
+Leave blank normally.
+
+- Config:      client_id
+- Env Var:     RCLONE_ONEDRIVE_CLIENT_ID
+- Type:        string
+- Default:     ""
+
+#### --onedrive-client-secret
+
+Microsoft App Client Secret
+Leave blank normally.
+
+- Config:      client_secret
+- Env Var:     RCLONE_ONEDRIVE_CLIENT_SECRET
+- Type:        string
+- Default:     ""
+
+### Advanced Options
+
+Here are the advanced options specific to onedrive (Microsoft OneDrive).
+
+#### --onedrive-chunk-size
+
+Chunk size to upload files with - must be multiple of 320k.
+
+Above this size files will be chunked - must be multiple of 320k. Note
+that the chunks will be buffered into memory.
+
+- Config:      chunk_size
+- Env Var:     RCLONE_ONEDRIVE_CHUNK_SIZE
+- Type:        SizeSuffix
+- Default:     10M
+
+#### --onedrive-drive-id
+
+The ID of the drive to use
+
+- Config:      drive_id
+- Env Var:     RCLONE_ONEDRIVE_DRIVE_ID
+- Type:        string
+- Default:     ""
+
+#### --onedrive-drive-type
+
+The type of the drive ( personal | business | documentLibrary )
+
+- Config:      drive_type
+- Env Var:     RCLONE_ONEDRIVE_DRIVE_TYPE
+- Type:        string
+- Default:     ""
+
+#### --onedrive-expose-onenote-files
+
+Set to make OneNote files show up in directory listings.
+
+By default rclone will hide OneNote files in directory listings because
+operations like "Open" and "Update" won't work on them.  But this
+behaviour may also prevent you from deleting them.  If you want to
+delete OneNote files or otherwise want them to show up in directory
+listing, set this option.
+
+- Config:      expose_onenote_files
+- Env Var:     RCLONE_ONEDRIVE_EXPOSE_ONENOTE_FILES
+- Type:        bool
+- Default:     false
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/opendrive.md b/docs/content/opendrive.md
index 229774963..2caf42734 100644
--- a/docs/content/opendrive.md
+++ b/docs/content/opendrive.md
@@ -93,8 +93,30 @@ OpenDrive allows modification times to be set on objects accurate to 1
 second. These will be used to detect whether objects need syncing or
 not.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/opendrive/opendrive.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to opendrive (OpenDrive).
+
+#### --opendrive-username
+
+Username
+
+- Config:      username
+- Env Var:     RCLONE_OPENDRIVE_USERNAME
+- Type:        string
+- Default:     ""
+
+#### --opendrive-password
+
+Password.
+
+- Config:      password
+- Env Var:     RCLONE_OPENDRIVE_PASSWORD
+- Type:        string
+- Default:     ""
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/pcloud.md b/docs/content/pcloud.md
index 34c75c56e..2805634f9 100644
--- a/docs/content/pcloud.md
+++ b/docs/content/pcloud.md
@@ -134,5 +134,29 @@ Deleted files will be moved to the trash.  Your subscription level
 will determine how long items stay in the trash.  `rclone cleanup` can
 be used to empty the trash.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/pcloud/pcloud.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to pcloud (Pcloud).
+
+#### --pcloud-client-id
+
+Pcloud App Client Id
+Leave blank normally.
+
+- Config:      client_id
+- Env Var:     RCLONE_PCLOUD_CLIENT_ID
+- Type:        string
+- Default:     ""
+
+#### --pcloud-client-secret
+
+Pcloud App Client Secret
+Leave blank normally.
+
+- Config:      client_secret
+- Env Var:     RCLONE_PCLOUD_CLIENT_SECRET
+- Type:        string
+- Default:     ""
+
+<!--- autogenerated options stop -->
diff --git a/docs/content/qingstor.md b/docs/content/qingstor.md
index 476251976..46e0f247f 100644
--- a/docs/content/qingstor.md
+++ b/docs/content/qingstor.md
@@ -152,5 +152,86 @@ credentials. In order of precedence:
      - Access Key ID: `QS_ACCESS_KEY_ID` or `QS_ACCESS_KEY`
      - Secret Access Key: `QS_SECRET_ACCESS_KEY` or `QS_SECRET_KEY`
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/qingstor/qingstor.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to qingstor (QingCloud Object Storage).
+
+#### --qingstor-env-auth
+
+Get QingStor credentials from runtime. Only applies if access_key_id and secret_access_key is blank.
+
+- Config:      env_auth
+- Env Var:     RCLONE_QINGSTOR_ENV_AUTH
+- Type:        bool
+- Default:     false
+- Examples:
+    - "false"
+        - Enter QingStor credentials in the next step
+    - "true"
+        - Get QingStor credentials from the environment (env vars or IAM)
+
+#### --qingstor-access-key-id
+
+QingStor Access Key ID
+Leave blank for anonymous access or runtime credentials.
+
+- Config:      access_key_id
+- Env Var:     RCLONE_QINGSTOR_ACCESS_KEY_ID
+- Type:        string
+- Default:     ""
+
+#### --qingstor-secret-access-key
+
+QingStor Secret Access Key (password)
+Leave blank for anonymous access or runtime credentials.
+
+- Config:      secret_access_key
+- Env Var:     RCLONE_QINGSTOR_SECRET_ACCESS_KEY
+- Type:        string
+- Default:     ""
+
+#### --qingstor-endpoint
+
+Enter a endpoint URL to connection QingStor API.
+Leave blank will use the default value "https://qingstor.com:443"
+
+- Config:      endpoint
+- Env Var:     RCLONE_QINGSTOR_ENDPOINT
+- Type:        string
+- Default:     ""
+
+#### --qingstor-zone
+
+Zone to connect to.
+Default is "pek3a".
+
+- Config:      zone
+- Env Var:     RCLONE_QINGSTOR_ZONE
+- Type:        string
+- Default:     ""
+- Examples:
+    - "pek3a"
+        - The Beijing (China) Three Zone
+        - Needs location constraint pek3a.
+    - "sh1a"
+        - The Shanghai (China) First Zone
+        - Needs location constraint sh1a.
+    - "gd2a"
+        - The Guangdong (China) Second Zone
+        - Needs location constraint gd2a.
+
+### Advanced Options
+
+Here are the advanced options specific to qingstor (QingCloud Object Storage).
+
+#### --qingstor-connection-retries
+
+Number of connnection retries.
+
+- Config:      connection_retries
+- Env Var:     RCLONE_QINGSTOR_CONNECTION_RETRIES
+- Type:        int
+- Default:     3
+
+<!--- autogenerated options stop -->
diff --git a/docs/content/s3.md b/docs/content/s3.md
index 5000a98c5..a59851952 100644
--- a/docs/content/s3.md
+++ b/docs/content/s3.md
@@ -370,8 +370,531 @@ tries to access the data you will see an error like below.
 In this case you need to [restore](http://docs.aws.amazon.com/AmazonS3/latest/user-guide/restore-archived-objects.html)
 the object(s) in question before using rclone.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/s3/s3.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to s3 (Amazon S3 Compliant Storage Providers (AWS, Ceph, Dreamhost, IBM COS, Minio)).
+
+#### --s3-provider
+
+Choose your S3 provider.
+
+- Config:      provider
+- Env Var:     RCLONE_S3_PROVIDER
+- Type:        string
+- Default:     ""
+- Examples:
+    - "AWS"
+        - Amazon Web Services (AWS) S3
+    - "Ceph"
+        - Ceph Object Storage
+    - "DigitalOcean"
+        - Digital Ocean Spaces
+    - "Dreamhost"
+        - Dreamhost DreamObjects
+    - "IBMCOS"
+        - IBM COS S3
+    - "Minio"
+        - Minio Object Storage
+    - "Wasabi"
+        - Wasabi Object Storage
+    - "Other"
+        - Any other S3 compatible provider
+
+#### --s3-env-auth
+
+Get AWS credentials from runtime (environment variables or EC2/ECS meta data if no env vars).
+Only applies if access_key_id and secret_access_key is blank.
+
+- Config:      env_auth
+- Env Var:     RCLONE_S3_ENV_AUTH
+- Type:        bool
+- Default:     false
+- Examples:
+    - "false"
+        - Enter AWS credentials in the next step
+    - "true"
+        - Get AWS credentials from the environment (env vars or IAM)
+
+#### --s3-access-key-id
+
+AWS Access Key ID.
+Leave blank for anonymous access or runtime credentials.
+
+- Config:      access_key_id
+- Env Var:     RCLONE_S3_ACCESS_KEY_ID
+- Type:        string
+- Default:     ""
+
+#### --s3-secret-access-key
+
+AWS Secret Access Key (password)
+Leave blank for anonymous access or runtime credentials.
+
+- Config:      secret_access_key
+- Env Var:     RCLONE_S3_SECRET_ACCESS_KEY
+- Type:        string
+- Default:     ""
+
+#### --s3-region
+
+Region to connect to.
+
+- Config:      region
+- Env Var:     RCLONE_S3_REGION
+- Type:        string
+- Default:     ""
+- Examples:
+    - "us-east-1"
+        - The default endpoint - a good choice if you are unsure.
+        - US Region, Northern Virginia or Pacific Northwest.
+        - Leave location constraint empty.
+    - "us-east-2"
+        - US East (Ohio) Region
+        - Needs location constraint us-east-2.
+    - "us-west-2"
+        - US West (Oregon) Region
+        - Needs location constraint us-west-2.
+    - "us-west-1"
+        - US West (Northern California) Region
+        - Needs location constraint us-west-1.
+    - "ca-central-1"
+        - Canada (Central) Region
+        - Needs location constraint ca-central-1.
+    - "eu-west-1"
+        - EU (Ireland) Region
+        - Needs location constraint EU or eu-west-1.
+    - "eu-west-2"
+        - EU (London) Region
+        - Needs location constraint eu-west-2.
+    - "eu-central-1"
+        - EU (Frankfurt) Region
+        - Needs location constraint eu-central-1.
+    - "ap-southeast-1"
+        - Asia Pacific (Singapore) Region
+        - Needs location constraint ap-southeast-1.
+    - "ap-southeast-2"
+        - Asia Pacific (Sydney) Region
+        - Needs location constraint ap-southeast-2.
+    - "ap-northeast-1"
+        - Asia Pacific (Tokyo) Region
+        - Needs location constraint ap-northeast-1.
+    - "ap-northeast-2"
+        - Asia Pacific (Seoul)
+        - Needs location constraint ap-northeast-2.
+    - "ap-south-1"
+        - Asia Pacific (Mumbai)
+        - Needs location constraint ap-south-1.
+    - "sa-east-1"
+        - South America (Sao Paulo) Region
+        - Needs location constraint sa-east-1.
+
+#### --s3-region
+
+Region to connect to.
+Leave blank if you are using an S3 clone and you don't have a region.
+
+- Config:      region
+- Env Var:     RCLONE_S3_REGION
+- Type:        string
+- Default:     ""
+- Examples:
+    - ""
+        - Use this if unsure. Will use v4 signatures and an empty region.
+    - "other-v2-signature"
+        - Use this only if v4 signatures don't work, eg pre Jewel/v10 CEPH.
+
+#### --s3-endpoint
+
+Endpoint for S3 API.
+Leave blank if using AWS to use the default endpoint for the region.
+
+- Config:      endpoint
+- Env Var:     RCLONE_S3_ENDPOINT
+- Type:        string
+- Default:     ""
+
+#### --s3-endpoint
+
+Endpoint for IBM COS S3 API.
+Specify if using an IBM COS On Premise.
+
+- Config:      endpoint
+- Env Var:     RCLONE_S3_ENDPOINT
+- Type:        string
+- Default:     ""
+- Examples:
+    - "s3-api.us-geo.objectstorage.softlayer.net"
+        - US Cross Region Endpoint
+    - "s3-api.dal.us-geo.objectstorage.softlayer.net"
+        - US Cross Region Dallas Endpoint
+    - "s3-api.wdc-us-geo.objectstorage.softlayer.net"
+        - US Cross Region Washington DC Endpoint
+    - "s3-api.sjc-us-geo.objectstorage.softlayer.net"
+        - US Cross Region San Jose Endpoint
+    - "s3-api.us-geo.objectstorage.service.networklayer.com"
+        - US Cross Region Private Endpoint
+    - "s3-api.dal-us-geo.objectstorage.service.networklayer.com"
+        - US Cross Region Dallas Private Endpoint
+    - "s3-api.wdc-us-geo.objectstorage.service.networklayer.com"
+        - US Cross Region Washington DC Private Endpoint
+    - "s3-api.sjc-us-geo.objectstorage.service.networklayer.com"
+        - US Cross Region San Jose Private Endpoint
+    - "s3.us-east.objectstorage.softlayer.net"
+        - US Region East Endpoint
+    - "s3.us-east.objectstorage.service.networklayer.com"
+        - US Region East Private Endpoint
+    - "s3.us-south.objectstorage.softlayer.net"
+        - US Region South Endpoint
+    - "s3.us-south.objectstorage.service.networklayer.com"
+        - US Region South Private Endpoint
+    - "s3.eu-geo.objectstorage.softlayer.net"
+        - EU Cross Region Endpoint
+    - "s3.fra-eu-geo.objectstorage.softlayer.net"
+        - EU Cross Region Frankfurt Endpoint
+    - "s3.mil-eu-geo.objectstorage.softlayer.net"
+        - EU Cross Region Milan Endpoint
+    - "s3.ams-eu-geo.objectstorage.softlayer.net"
+        - EU Cross Region Amsterdam Endpoint
+    - "s3.eu-geo.objectstorage.service.networklayer.com"
+        - EU Cross Region Private Endpoint
+    - "s3.fra-eu-geo.objectstorage.service.networklayer.com"
+        - EU Cross Region Frankfurt Private Endpoint
+    - "s3.mil-eu-geo.objectstorage.service.networklayer.com"
+        - EU Cross Region Milan Private Endpoint
+    - "s3.ams-eu-geo.objectstorage.service.networklayer.com"
+        - EU Cross Region Amsterdam Private Endpoint
+    - "s3.eu-gb.objectstorage.softlayer.net"
+        - Great Britan Endpoint
+    - "s3.eu-gb.objectstorage.service.networklayer.com"
+        - Great Britan Private Endpoint
+    - "s3.ap-geo.objectstorage.softlayer.net"
+        - APAC Cross Regional Endpoint
+    - "s3.tok-ap-geo.objectstorage.softlayer.net"
+        - APAC Cross Regional Tokyo Endpoint
+    - "s3.hkg-ap-geo.objectstorage.softlayer.net"
+        - APAC Cross Regional HongKong Endpoint
+    - "s3.seo-ap-geo.objectstorage.softlayer.net"
+        - APAC Cross Regional Seoul Endpoint
+    - "s3.ap-geo.objectstorage.service.networklayer.com"
+        - APAC Cross Regional Private Endpoint
+    - "s3.tok-ap-geo.objectstorage.service.networklayer.com"
+        - APAC Cross Regional Tokyo Private Endpoint
+    - "s3.hkg-ap-geo.objectstorage.service.networklayer.com"
+        - APAC Cross Regional HongKong Private Endpoint
+    - "s3.seo-ap-geo.objectstorage.service.networklayer.com"
+        - APAC Cross Regional Seoul Private Endpoint
+    - "s3.mel01.objectstorage.softlayer.net"
+        - Melbourne Single Site Endpoint
+    - "s3.mel01.objectstorage.service.networklayer.com"
+        - Melbourne Single Site Private Endpoint
+    - "s3.tor01.objectstorage.softlayer.net"
+        - Toronto Single Site Endpoint
+    - "s3.tor01.objectstorage.service.networklayer.com"
+        - Toronto Single Site Private Endpoint
+
+#### --s3-endpoint
+
+Endpoint for S3 API.
+Required when using an S3 clone.
+
+- Config:      endpoint
+- Env Var:     RCLONE_S3_ENDPOINT
+- Type:        string
+- Default:     ""
+- Examples:
+    - "objects-us-west-1.dream.io"
+        - Dream Objects endpoint
+    - "nyc3.digitaloceanspaces.com"
+        - Digital Ocean Spaces New York 3
+    - "ams3.digitaloceanspaces.com"
+        - Digital Ocean Spaces Amsterdam 3
+    - "sgp1.digitaloceanspaces.com"
+        - Digital Ocean Spaces Singapore 1
+    - "s3.wasabisys.com"
+        - Wasabi Object Storage
+
+#### --s3-location-constraint
+
+Location constraint - must be set to match the Region.
+Used when creating buckets only.
+
+- Config:      location_constraint
+- Env Var:     RCLONE_S3_LOCATION_CONSTRAINT
+- Type:        string
+- Default:     ""
+- Examples:
+    - ""
+        - Empty for US Region, Northern Virginia or Pacific Northwest.
+    - "us-east-2"
+        - US East (Ohio) Region.
+    - "us-west-2"
+        - US West (Oregon) Region.
+    - "us-west-1"
+        - US West (Northern California) Region.
+    - "ca-central-1"
+        - Canada (Central) Region.
+    - "eu-west-1"
+        - EU (Ireland) Region.
+    - "eu-west-2"
+        - EU (London) Region.
+    - "EU"
+        - EU Region.
+    - "ap-southeast-1"
+        - Asia Pacific (Singapore) Region.
+    - "ap-southeast-2"
+        - Asia Pacific (Sydney) Region.
+    - "ap-northeast-1"
+        - Asia Pacific (Tokyo) Region.
+    - "ap-northeast-2"
+        - Asia Pacific (Seoul)
+    - "ap-south-1"
+        - Asia Pacific (Mumbai)
+    - "sa-east-1"
+        - South America (Sao Paulo) Region.
+
+#### --s3-location-constraint
+
+Location constraint - must match endpoint when using IBM Cloud Public.
+For on-prem COS, do not make a selection from this list, hit enter
+
+- Config:      location_constraint
+- Env Var:     RCLONE_S3_LOCATION_CONSTRAINT
+- Type:        string
+- Default:     ""
+- Examples:
+    - "us-standard"
+        - US Cross Region Standard
+    - "us-vault"
+        - US Cross Region Vault
+    - "us-cold"
+        - US Cross Region Cold
+    - "us-flex"
+        - US Cross Region Flex
+    - "us-east-standard"
+        - US East Region Standard
+    - "us-east-vault"
+        - US East Region Vault
+    - "us-east-cold"
+        - US East Region Cold
+    - "us-east-flex"
+        - US East Region Flex
+    - "us-south-standard"
+        - US Sout hRegion Standard
+    - "us-south-vault"
+        - US South Region Vault
+    - "us-south-cold"
+        - US South Region Cold
+    - "us-south-flex"
+        - US South Region Flex
+    - "eu-standard"
+        - EU Cross Region Standard
+    - "eu-vault"
+        - EU Cross Region Vault
+    - "eu-cold"
+        - EU Cross Region Cold
+    - "eu-flex"
+        - EU Cross Region Flex
+    - "eu-gb-standard"
+        - Great Britan Standard
+    - "eu-gb-vault"
+        - Great Britan Vault
+    - "eu-gb-cold"
+        - Great Britan Cold
+    - "eu-gb-flex"
+        - Great Britan Flex
+    - "ap-standard"
+        - APAC Standard
+    - "ap-vault"
+        - APAC Vault
+    - "ap-cold"
+        - APAC Cold
+    - "ap-flex"
+        - APAC Flex
+    - "mel01-standard"
+        - Melbourne Standard
+    - "mel01-vault"
+        - Melbourne Vault
+    - "mel01-cold"
+        - Melbourne Cold
+    - "mel01-flex"
+        - Melbourne Flex
+    - "tor01-standard"
+        - Toronto Standard
+    - "tor01-vault"
+        - Toronto Vault
+    - "tor01-cold"
+        - Toronto Cold
+    - "tor01-flex"
+        - Toronto Flex
+
+#### --s3-location-constraint
+
+Location constraint - must be set to match the Region.
+Leave blank if not sure. Used when creating buckets only.
+
+- Config:      location_constraint
+- Env Var:     RCLONE_S3_LOCATION_CONSTRAINT
+- Type:        string
+- Default:     ""
+
+#### --s3-acl
+
+Canned ACL used when creating buckets and/or storing objects in S3.
+For more info visit https://docs.aws.amazon.com/AmazonS3/latest/dev/acl-overview.html#canned-acl
+
+- Config:      acl
+- Env Var:     RCLONE_S3_ACL
+- Type:        string
+- Default:     ""
+- Examples:
+    - "private"
+        - Owner gets FULL_CONTROL. No one else has access rights (default).
+    - "public-read"
+        - Owner gets FULL_CONTROL. The AllUsers group gets READ access.
+    - "public-read-write"
+        - Owner gets FULL_CONTROL. The AllUsers group gets READ and WRITE access.
+        - Granting this on a bucket is generally not recommended.
+    - "authenticated-read"
+        - Owner gets FULL_CONTROL. The AuthenticatedUsers group gets READ access.
+    - "bucket-owner-read"
+        - Object owner gets FULL_CONTROL. Bucket owner gets READ access.
+        - If you specify this canned ACL when creating a bucket, Amazon S3 ignores it.
+    - "bucket-owner-full-control"
+        - Both the object owner and the bucket owner get FULL_CONTROL over the object.
+        - If you specify this canned ACL when creating a bucket, Amazon S3 ignores it.
+    - "private"
+        - Owner gets FULL_CONTROL. No one else has access rights (default). This acl is available on IBM Cloud (Infra), IBM Cloud (Storage), On-Premise COS
+    - "public-read"
+        - Owner gets FULL_CONTROL. The AllUsers group gets READ access. This acl is available on IBM Cloud (Infra), IBM Cloud (Storage), On-Premise IBM COS
+    - "public-read-write"
+        - Owner gets FULL_CONTROL. The AllUsers group gets READ and WRITE access. This acl is available on IBM Cloud (Infra), On-Premise IBM COS
+    - "authenticated-read"
+        - Owner gets FULL_CONTROL. The AuthenticatedUsers group gets READ access. Not supported on Buckets. This acl is available on IBM Cloud (Infra) and On-Premise IBM COS
+
+#### --s3-server-side-encryption
+
+The server-side encryption algorithm used when storing this object in S3.
+
+- Config:      server_side_encryption
+- Env Var:     RCLONE_S3_SERVER_SIDE_ENCRYPTION
+- Type:        string
+- Default:     ""
+- Examples:
+    - ""
+        - None
+    - "AES256"
+        - AES256
+    - "aws:kms"
+        - aws:kms
+
+#### --s3-sse-kms-key-id
+
+If using KMS ID you must provide the ARN of Key.
+
+- Config:      sse_kms_key_id
+- Env Var:     RCLONE_S3_SSE_KMS_KEY_ID
+- Type:        string
+- Default:     ""
+- Examples:
+    - ""
+        - None
+    - "arn:aws:kms:us-east-1:*"
+        - arn:aws:kms:*
+
+#### --s3-storage-class
+
+The storage class to use when storing new objects in S3.
+
+- Config:      storage_class
+- Env Var:     RCLONE_S3_STORAGE_CLASS
+- Type:        string
+- Default:     ""
+- Examples:
+    - ""
+        - Default
+    - "STANDARD"
+        - Standard storage class
+    - "REDUCED_REDUNDANCY"
+        - Reduced redundancy storage class
+    - "STANDARD_IA"
+        - Standard Infrequent Access storage class
+    - "ONEZONE_IA"
+        - One Zone Infrequent Access storage class
+
+### Advanced Options
+
+Here are the advanced options specific to s3 (Amazon S3 Compliant Storage Providers (AWS, Ceph, Dreamhost, IBM COS, Minio)).
+
+#### --s3-chunk-size
+
+Chunk size to use for uploading.
+
+Any files larger than this will be uploaded in chunks of this
+size. The default is 5MB. The minimum is 5MB.
+
+Note that "--s3-upload-concurrency" chunks of this size are buffered
+in memory per transfer.
+
+If you are transferring large files over high speed links and you have
+enough memory, then increasing this will speed up the transfers.
+
+- Config:      chunk_size
+- Env Var:     RCLONE_S3_CHUNK_SIZE
+- Type:        SizeSuffix
+- Default:     5M
+
+#### --s3-disable-checksum
+
+Don't store MD5 checksum with object metadata
+
+- Config:      disable_checksum
+- Env Var:     RCLONE_S3_DISABLE_CHECKSUM
+- Type:        bool
+- Default:     false
+
+#### --s3-session-token
+
+An AWS session token
+
+- Config:      session_token
+- Env Var:     RCLONE_S3_SESSION_TOKEN
+- Type:        string
+- Default:     ""
+
+#### --s3-upload-concurrency
+
+Concurrency for multipart uploads.
+
+This is the number of chunks of the same file that are uploaded
+concurrently.
+
+If you are uploading small numbers of large file over high speed link
+and these uploads do not fully utilize your bandwidth, then increasing
+this may help to speed up the transfers.
+
+- Config:      upload_concurrency
+- Env Var:     RCLONE_S3_UPLOAD_CONCURRENCY
+- Type:        int
+- Default:     2
+
+#### --s3-force-path-style
+
+If true use path style access if false use virtual hosted style.
+
+If this is true (the default) then rclone will use path style access,
+if false then rclone will use virtual path style. See [the AWS S3
+docs](https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingBucket.html#access-bucket-intro)
+for more info.
+
+Some providers (eg Aliyun OSS or Netease COS) require this set to false.
+
+- Config:      force_path_style
+- Env Var:     RCLONE_S3_FORCE_PATH_STYLE
+- Type:        bool
+- Default:     true
+
+<!--- autogenerated options stop -->
 
 ### Anonymous access to public buckets ###
 
diff --git a/docs/content/sftp.md b/docs/content/sftp.md
index 41cc9f877..8f0b27639 100644
--- a/docs/content/sftp.md
+++ b/docs/content/sftp.md
@@ -158,8 +158,126 @@ upload (for example, certain configurations of ProFTPd with mod_sftp). If you
 are using one of these servers, you can set the option `set_modtime = false` in
 your RClone backend configuration to disable this behaviour.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/sftp/sftp.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to sftp (SSH/SFTP Connection).
+
+#### --sftp-host
+
+SSH host to connect to
+
+- Config:      host
+- Env Var:     RCLONE_SFTP_HOST
+- Type:        string
+- Default:     ""
+- Examples:
+    - "example.com"
+        - Connect to example.com
+
+#### --sftp-user
+
+SSH username, leave blank for current username, ncw
+
+- Config:      user
+- Env Var:     RCLONE_SFTP_USER
+- Type:        string
+- Default:     ""
+
+#### --sftp-port
+
+SSH port, leave blank to use default (22)
+
+- Config:      port
+- Env Var:     RCLONE_SFTP_PORT
+- Type:        string
+- Default:     ""
+
+#### --sftp-pass
+
+SSH password, leave blank to use ssh-agent.
+
+- Config:      pass
+- Env Var:     RCLONE_SFTP_PASS
+- Type:        string
+- Default:     ""
+
+#### --sftp-key-file
+
+Path to unencrypted PEM-encoded private key file, leave blank to use ssh-agent.
+
+- Config:      key_file
+- Env Var:     RCLONE_SFTP_KEY_FILE
+- Type:        string
+- Default:     ""
+
+#### --sftp-use-insecure-cipher
+
+Enable the use of the aes128-cbc cipher. This cipher is insecure and may allow plaintext data to be recovered by an attacker.
+
+- Config:      use_insecure_cipher
+- Env Var:     RCLONE_SFTP_USE_INSECURE_CIPHER
+- Type:        bool
+- Default:     false
+- Examples:
+    - "false"
+        - Use default Cipher list.
+    - "true"
+        - Enables the use of the aes128-cbc cipher.
+
+#### --sftp-disable-hashcheck
+
+Disable the execution of SSH commands to determine if remote file hashing is available.
+Leave blank or set to false to enable hashing (recommended), set to true to disable hashing.
+
+- Config:      disable_hashcheck
+- Env Var:     RCLONE_SFTP_DISABLE_HASHCHECK
+- Type:        bool
+- Default:     false
+
+### Advanced Options
+
+Here are the advanced options specific to sftp (SSH/SFTP Connection).
+
+#### --sftp-ask-password
+
+Allow asking for SFTP password when needed.
+
+- Config:      ask_password
+- Env Var:     RCLONE_SFTP_ASK_PASSWORD
+- Type:        bool
+- Default:     false
+
+#### --sftp-path-override
+
+Override path used by SSH connection.
+
+This allows checksum calculation when SFTP and SSH paths are
+different. This issue affects among others Synology NAS boxes.
+
+Shared folders can be found in directories representing volumes
+
+    rclone sync /home/local/directory remote:/directory --ssh-path-override /volume2/directory
+
+Home directory can be found in a shared folder called "home"
+
+    rclone sync /home/local/directory remote:/home/directory --ssh-path-override /volume1/homes/USER/directory
+
+- Config:      path_override
+- Env Var:     RCLONE_SFTP_PATH_OVERRIDE
+- Type:        string
+- Default:     ""
+
+#### --sftp-set-modtime
+
+Set the modified time on the remote if set.
+
+- Config:      set_modtime
+- Env Var:     RCLONE_SFTP_SET_MODTIME
+- Type:        bool
+- Default:     true
+
+<!--- autogenerated options stop -->
 
 ### Limitations ###
 
diff --git a/docs/content/swift.md b/docs/content/swift.md
index 4fc5c7dff..d07cd211f 100644
--- a/docs/content/swift.md
+++ b/docs/content/swift.md
@@ -261,8 +261,200 @@ sufficient to determine if it is "dirty". By using `--update` along with
 `--use-server-modtime`, you can avoid the extra API call and simply upload
 files whose local modtime is newer than the time it was last uploaded.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/swift/swift.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to swift (Openstack Swift (Rackspace Cloud Files, Memset Memstore, OVH)).
+
+#### --swift-env-auth
+
+Get swift credentials from environment variables in standard OpenStack form.
+
+- Config:      env_auth
+- Env Var:     RCLONE_SWIFT_ENV_AUTH
+- Type:        bool
+- Default:     false
+- Examples:
+    - "false"
+        - Enter swift credentials in the next step
+    - "true"
+        - Get swift credentials from environment vars. Leave other fields blank if using this.
+
+#### --swift-user
+
+User name to log in (OS_USERNAME).
+
+- Config:      user
+- Env Var:     RCLONE_SWIFT_USER
+- Type:        string
+- Default:     ""
+
+#### --swift-key
+
+API key or password (OS_PASSWORD).
+
+- Config:      key
+- Env Var:     RCLONE_SWIFT_KEY
+- Type:        string
+- Default:     ""
+
+#### --swift-auth
+
+Authentication URL for server (OS_AUTH_URL).
+
+- Config:      auth
+- Env Var:     RCLONE_SWIFT_AUTH
+- Type:        string
+- Default:     ""
+- Examples:
+    - "https://auth.api.rackspacecloud.com/v1.0"
+        - Rackspace US
+    - "https://lon.auth.api.rackspacecloud.com/v1.0"
+        - Rackspace UK
+    - "https://identity.api.rackspacecloud.com/v2.0"
+        - Rackspace v2
+    - "https://auth.storage.memset.com/v1.0"
+        - Memset Memstore UK
+    - "https://auth.storage.memset.com/v2.0"
+        - Memset Memstore UK v2
+    - "https://auth.cloud.ovh.net/v2.0"
+        - OVH
+
+#### --swift-user-id
+
+User ID to log in - optional - most swift systems use user and leave this blank (v3 auth) (OS_USER_ID).
+
+- Config:      user_id
+- Env Var:     RCLONE_SWIFT_USER_ID
+- Type:        string
+- Default:     ""
+
+#### --swift-domain
+
+User domain - optional (v3 auth) (OS_USER_DOMAIN_NAME)
+
+- Config:      domain
+- Env Var:     RCLONE_SWIFT_DOMAIN
+- Type:        string
+- Default:     ""
+
+#### --swift-tenant
+
+Tenant name - optional for v1 auth, this or tenant_id required otherwise (OS_TENANT_NAME or OS_PROJECT_NAME)
+
+- Config:      tenant
+- Env Var:     RCLONE_SWIFT_TENANT
+- Type:        string
+- Default:     ""
+
+#### --swift-tenant-id
+
+Tenant ID - optional for v1 auth, this or tenant required otherwise (OS_TENANT_ID)
+
+- Config:      tenant_id
+- Env Var:     RCLONE_SWIFT_TENANT_ID
+- Type:        string
+- Default:     ""
+
+#### --swift-tenant-domain
+
+Tenant domain - optional (v3 auth) (OS_PROJECT_DOMAIN_NAME)
+
+- Config:      tenant_domain
+- Env Var:     RCLONE_SWIFT_TENANT_DOMAIN
+- Type:        string
+- Default:     ""
+
+#### --swift-region
+
+Region name - optional (OS_REGION_NAME)
+
+- Config:      region
+- Env Var:     RCLONE_SWIFT_REGION
+- Type:        string
+- Default:     ""
+
+#### --swift-storage-url
+
+Storage URL - optional (OS_STORAGE_URL)
+
+- Config:      storage_url
+- Env Var:     RCLONE_SWIFT_STORAGE_URL
+- Type:        string
+- Default:     ""
+
+#### --swift-auth-token
+
+Auth Token from alternate authentication - optional (OS_AUTH_TOKEN)
+
+- Config:      auth_token
+- Env Var:     RCLONE_SWIFT_AUTH_TOKEN
+- Type:        string
+- Default:     ""
+
+#### --swift-auth-version
+
+AuthVersion - optional - set to (1,2,3) if your auth URL has no version (ST_AUTH_VERSION)
+
+- Config:      auth_version
+- Env Var:     RCLONE_SWIFT_AUTH_VERSION
+- Type:        int
+- Default:     0
+
+#### --swift-endpoint-type
+
+Endpoint type to choose from the service catalogue (OS_ENDPOINT_TYPE)
+
+- Config:      endpoint_type
+- Env Var:     RCLONE_SWIFT_ENDPOINT_TYPE
+- Type:        string
+- Default:     "public"
+- Examples:
+    - "public"
+        - Public (default, choose this if not sure)
+    - "internal"
+        - Internal (use internal service net)
+    - "admin"
+        - Admin
+
+#### --swift-storage-policy
+
+The storage policy to use when creating a new container
+
+This applies the specified storage policy when creating a new
+container. The policy cannot be changed afterwards. The allowed
+configuration values and their meaning depend on your Swift storage
+provider.
+
+- Config:      storage_policy
+- Env Var:     RCLONE_SWIFT_STORAGE_POLICY
+- Type:        string
+- Default:     ""
+- Examples:
+    - ""
+        - Default
+    - "pcs"
+        - OVH Public Cloud Storage
+    - "pca"
+        - OVH Public Cloud Archive
+
+### Advanced Options
+
+Here are the advanced options specific to swift (Openstack Swift (Rackspace Cloud Files, Memset Memstore, OVH)).
+
+#### --swift-chunk-size
+
+Above this size files will be chunked into a _segments container.
+
+Above this size files will be chunked into a _segments container.  The
+default for this is 5GB which is its maximum value.
+
+- Config:      chunk_size
+- Env Var:     RCLONE_SWIFT_CHUNK_SIZE
+- Type:        SizeSuffix
+- Default:     5G
+
+<!--- autogenerated options stop -->
 
 ### Modified time ###
 
diff --git a/docs/content/union.md b/docs/content/union.md
index 158694112..1c77702b4 100644
--- a/docs/content/union.md
+++ b/docs/content/union.md
@@ -142,5 +142,20 @@ Copy another local directory to the union directory called source, which will be
 
     rclone copy C:\source remote:source
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/union/union.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to union (A stackable unification remote, which can appear to merge the contents of several remotes).
+
+#### --union-remotes
+
+List of space separated remotes.
+Can be 'remotea:test/dir remoteb:', '"remotea:test/space dir" remoteb:', etc.
+The last remote is used to write to.
+
+- Config:      remotes
+- Env Var:     RCLONE_UNION_REMOTES
+- Type:        string
+- Default:     ""
+
+<!--- autogenerated options stop -->
diff --git a/docs/content/webdav.md b/docs/content/webdav.md
index c93f4eb97..219638ee3 100644
--- a/docs/content/webdav.md
+++ b/docs/content/webdav.md
@@ -101,8 +101,69 @@ Owncloud or Nextcloud rclone will support modified times.
 
 Hashes are not supported.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/webdav/webdav.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to webdav (Webdav).
+
+#### --webdav-url
+
+URL of http host to connect to
+
+- Config:      url
+- Env Var:     RCLONE_WEBDAV_URL
+- Type:        string
+- Default:     ""
+- Examples:
+    - "https://example.com"
+        - Connect to example.com
+
+#### --webdav-vendor
+
+Name of the Webdav site/service/software you are using
+
+- Config:      vendor
+- Env Var:     RCLONE_WEBDAV_VENDOR
+- Type:        string
+- Default:     ""
+- Examples:
+    - "nextcloud"
+        - Nextcloud
+    - "owncloud"
+        - Owncloud
+    - "sharepoint"
+        - Sharepoint
+    - "other"
+        - Other site/service or software
+
+#### --webdav-user
+
+User name
+
+- Config:      user
+- Env Var:     RCLONE_WEBDAV_USER
+- Type:        string
+- Default:     ""
+
+#### --webdav-pass
+
+Password.
+
+- Config:      pass
+- Env Var:     RCLONE_WEBDAV_PASS
+- Type:        string
+- Default:     ""
+
+#### --webdav-bearer-token
+
+Bearer token instead of user/pass (eg a Macaroon)
+
+- Config:      bearer_token
+- Env Var:     RCLONE_WEBDAV_BEARER_TOKEN
+- Type:        string
+- Default:     ""
+
+<!--- autogenerated options stop -->
 
 ## Provider notes ##
 
diff --git a/docs/content/yandex.md b/docs/content/yandex.md
index 4db781025..9103624eb 100644
--- a/docs/content/yandex.md
+++ b/docs/content/yandex.md
@@ -128,5 +128,29 @@ If you wish to empty your trash you can use the `rclone cleanup remote:`
 command which will permanently delete all your trashed files. This command
 does not take any path arguments.
 
-<!--- autogenerated options start - edit in backend/backend.go options  -->
-<!--- autogenerated options stop  -->
+<!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/yandex/yandex.go then run make backenddocs -->
+### Standard Options
+
+Here are the standard options specific to yandex (Yandex Disk).
+
+#### --yandex-client-id
+
+Yandex Client Id
+Leave blank normally.
+
+- Config:      client_id
+- Env Var:     RCLONE_YANDEX_CLIENT_ID
+- Type:        string
+- Default:     ""
+
+#### --yandex-client-secret
+
+Yandex Client Secret
+Leave blank normally.
+
+- Config:      client_secret
+- Env Var:     RCLONE_YANDEX_CLIENT_SECRET
+- Type:        string
+- Default:     ""
+
+<!--- autogenerated options stop -->