2 files changed, 10 insertions, 6 deletions

diff --git a/Documentation/git-read-tree.txt b/Documentation/git-read-tree.txt
index 5375549820..a43e87448b 100644
--- a/Documentation/git-read-tree.txt
+++ b/Documentation/git-read-tree.txt
@@ -83,11 +83,10 @@ OPTIONS
 
 --prefix=<prefix>/::
 	Keep the current index contents, and read the contents
-	of the named tree-ish under the directory at `<prefix>`. The
-	original index file cannot have anything at the path
-	`<prefix>` itself, nor anything in the `<prefix>/`
-	directory.  Note that the `<prefix>/` value must end
-	with a slash.
+	of the named tree-ish under the directory at `<prefix>`.
+	The command will refuse to overwrite entries that already
+	existed in the original index file. Note that the `<prefix>/`
+	value must end with a slash.
 
 --exclude-per-directory=<gitignore>::
 	When running the command with `-u` and `-m` options, the
diff --git a/Documentation/git-submodule.txt b/Documentation/git-submodule.txt
index 6ec3fef079..b72964947a 100644
--- a/Documentation/git-submodule.txt
+++ b/Documentation/git-submodule.txt
@@ -79,7 +79,12 @@ to exist in the superproject. If <path> is not given, the
 <repository> is the URL of the new submodule's origin repository.
 This may be either an absolute URL, or (if it begins with ./
 or ../), the location relative to the superproject's origin
-repository. If the superproject doesn't have an origin configured
+repository (Please note that to specify a repository 'foo.git'
+which is located right next to a superproject 'bar.git', you'll
+have to use '../foo.git' instead of './foo.git' - as one might expect
+when following the rules for relative URLs - because the evaluation
+of relative URLs in Git is identical to that of relative directories).
+If the superproject doesn't have an origin configured
 the superproject is its own authoritative upstream and the current
 working directory is used instead.
 +