*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
[[def_gitfile]]gitfile::
A plain file `.git` at the root of a working tree that
points at the directory that is the real repository.
+ For proper use see linkgit:git-worktree[1] or linkgit:git-submodule[1].
+ For syntax see linkgit:gitrepository-layout[5].
[[def_grafts]]grafts::
Grafts enables two otherwise different lines of development to be joined