diff --git a/Documentation/git-format-patch.txt b/Documentation/git-format-patch.txt
index a1483ffd0f..f3ef4c1e04 100644
--- a/Documentation/git-format-patch.txt
+++ b/Documentation/git-format-patch.txt
@@ -8,7 +8,7 @@ git-format-patch - Prepare patches for e-mail submission.
 
 SYNOPSIS
 --------
-'git-format-patch' [-n][-o <dir>][-k][--mbox][--diff-options] <his> [<mine>]
+'git-format-patch' [-n][-o <dir>|--stdout][-k][--mbox][--diff-options] <his> [<mine>]
 
 DESCRIPTION
 -----------
@@ -54,6 +54,10 @@ OPTIONS
 	concatenated together and fed to `git-applymbox`.
 	Implies --author and --date.
 
+--stdout::
+	This flag generates the mbox formatted output to the
+	standard output, instead of saving them into a file per
+	patch and implies --mbox.
 
 Author
 ------
diff --git a/Documentation/git-mailsplit.txt b/Documentation/git-mailsplit.txt
index 557d2e9056..66239a8f8e 100644
--- a/Documentation/git-mailsplit.txt
+++ b/Documentation/git-mailsplit.txt
@@ -7,7 +7,7 @@ git-mailsplit - Totally braindamaged mbox splitter program.
 
 SYNOPSIS
 --------
-'git-mailsplit' <mbox> <directory>
+'git-mailsplit' [-d<prec>] <mbox> <directory>
 
 DESCRIPTION
 -----------
@@ -22,6 +22,12 @@ OPTIONS
 <directory>::
 	Directory in which to place the individual messages.
 
+-d<prec>::
+	Instead of the default 4 digits with leading zeros,
+	different precision can be specified for the generated
+	filenames.
+
+
 Author
 ------
 Written by Linus Torvalds <torvalds@osdl.org>