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-rw-r--r--Documentation/gitrepository-layout.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/gitrepository-layout.txt b/Documentation/gitrepository-layout.txt
index 1a2ef4c..949cd8a 100644
--- a/Documentation/gitrepository-layout.txt
+++ b/Documentation/gitrepository-layout.txt
@@ -23,7 +23,9 @@ A Git repository comes in two different flavours:
*Note*: Also you can have a plain text file `.git` at the root of
your working tree, containing `gitdir: <path>` to point at the real
-directory that has the repository. This mechanism is often used for
+directory that has the repository.
+This mechanism is called a 'gitfile' and is usually managed via the
+`git submodule` and `git worktree` commands. It is often used for
a working tree of a submodule checkout, to allow you in the
containing superproject to `git checkout` a branch that does not
have the submodule. The `checkout` has to remove the entire