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diff --git a/doc/git-annex.mdwn b/doc/git-annex.mdwn
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+++ b/doc/git-annex.mdwn
@@ -120,20 +120,23 @@ subdirectories).
Use this to undo an unlock command if you don't want to modify
the files, or have made modifications you want to discard.
-* sync
+* sync [remote ...]
Use this command when you want to synchronize the local repository with
- one or more other repositories. The sync process involves first committing
- all local changes, then fetching and merging the `synced/master` and the
- `git-annex` branch from the remote repositories and finally pushing the
- changes back to these remote repositories.
-
- You can use standard git commands to do each of those steps by hand,
- or if you don't want to worry about the details, you can use sync.
-
- By default, `git annex sync` will sync all remote repositories that have a
- `synced/master` branch. If you want to include/exclude a repository from
- this list, just create or delete this branch.
+ one or more of its remotes. You can specifiy the remotes to sync with;
+ the default is to sync with all remotes.
+
+ The sync process involves first committing all local changes, then
+ fetching and merging the `synced/master` and the `git-annex` branch
+ from the remote repositories and finally pushing the changes back to
+ those branches on the remote repositories. You can use standard git
+ commands to do each of those steps by hand, or if you don't want to
+ worry about the details, you can use sync.
+
+ Note that syncing with a remote will not update the remote's working
+ tree with changes made to the local repository. However, those changes
+ are pushed to the remote, so can be merged into its working tree
+ by running "git annex sync" on the remote.
Note that sync does not transfer any file contents from or to the remote
repositories.