diff --git a/Documentation/gitk.txt b/Documentation/gitk.txt
index c17e760184..d44e14c138 100644
--- a/Documentation/gitk.txt
+++ b/Documentation/gitk.txt
@@ -8,7 +8,7 @@ gitk - The Git repository browser
 SYNOPSIS
 --------
 [verse]
-'gitk' [<option>...] [<revs>] [--] [<path>...]
+'gitk' [<options>] [<revision range>] [\--] [<path>...]
 
 DESCRIPTION
 -----------
@@ -16,21 +16,38 @@ Displays changes in a repository or a selected set of commits. This includes
 visualizing the commit graph, showing information related to each commit, and
 the files in the trees of each revision.
 
-Historically, gitk was the first repository browser. It's written in tcl/tk
-and started off in a separate repository but was later merged into the main
-Git repository.
-
 OPTIONS
 -------
-To control which revisions to show, the command takes options applicable to
-the 'git rev-list' command (see linkgit:git-rev-list[1]).
-This manual page describes only the most
-frequently used options.
 
--n <number>::
---max-count=<number>::
+To control which revisions to show, gitk supports most options
+applicable to the 'git rev-list' command.  It also supports a few
+options applicable to the 'git diff-*' commands to control how the
+changes each commit introduces are shown.  Finally, it supports some
+gitk-specific options.
 
-	Limits the number of commits to show.
+gitk generally only understands options with arguments in the
+'sticked' form (see linkgit:gitcli[7]) due to limitations in the
+command line parser.
+
+rev-list options and arguments
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+This manual page describes only the most frequently used options.  See
+linkgit:git-rev-list[1] for a complete list.
+
+--all::
+
+	Show all refs (branches, tags, etc.).
+
+--branches[=<pattern>]::
+--tags[=<pattern>]::
+--remotes[=<pattern>]::
+
+	Pretend as if all the branches (tags, remote branches, resp.)
+	are listed on the command line as '<commit>'. If '<pattern>'
+	is given, limit refs to ones matching given shell glob. If
+	pattern lacks '?', '{asterisk}', or '[', '/{asterisk}' at the
+	end is implied.
 
 --since=<date>::
 
@@ -40,9 +57,9 @@ frequently used options.
 
 	Show commits older than a specific date.
 
---all::
+--date-order::
 
-	Show all branches.
+	Sort commits by date when possible.
 
 --merge::
 
@@ -51,19 +68,37 @@ frequently used options.
 	that modify the conflicted files and do not exist on all the heads
 	being merged.
 
---argscmd=<command>::
-	Command to be run each time gitk has to determine the list of
-	<revs> to show.  The command is expected to print on its standard
-	output a list of additional revs to be shown, one per line.
-	Use this instead of explicitly specifying <revs> if the set of
-	commits to show may vary between refreshes.
+--left-right::
 
---select-commit=<ref>::
+	Mark which side of a symmetric diff a commit is reachable
+	from.  Commits from the left side are prefixed with a `<`
+	symbol and those from the right with a `>` symbol.
 
-	Automatically select the specified commit after loading the graph.
-	Default behavior is equivalent to specifying '--select-commit=HEAD'.
+--full-history::
 
-<revs>::
+	When filtering history with '<path>...', does not prune some
+	history.  (See "History simplification" in linkgit:git-log[1]
+	for a more detailed explanation.)
+
+--simplify-merges::
+
+	Additional option to '--full-history' to remove some needless
+	merges from the resulting history, as there are no selected
+	commits contributing to this merge.  (See "History
+	simplification" in linkgit:git-log[1] for a more detailed
+	explanation.)
+
+--ancestry-path::
+
+	When given a range of commits to display
+	(e.g. 'commit1..commit2' or 'commit2 {caret}commit1'), only
+	display commits that exist directly on the ancestry chain
+	between the 'commit1' and 'commit2', i.e. commits that are
+	both descendants of 'commit1', and ancestors of 'commit2'.
+	(See "History simplification" in linkgit:git-log[1] for a more
+	detailed explanation.)
+
+<revision range>::
 
 	Limit the revisions to show. This can be either a single revision
 	meaning show from the given revision and back, or it can be a range in
@@ -78,6 +113,23 @@ frequently used options.
 	avoid ambiguity with respect to revision names use "--" to separate the paths
 	from any preceding options.
 
+gitk-specific options
+~~~~~~~~~~~~~~~~~~~~~
+
+--argscmd=<command>::
+
+	Command to be run each time gitk has to determine the revision
+	range to show.  The command is expected to print on its
+	standard output a list of additional revisions to be shown,
+	one per line.  Use this instead of explicitly specifying a
+	'<revision range>' if the set of commits to show may vary
+	between refreshes.
+
+--select-commit=<ref>::
+
+	Select the specified commit after loading the graph.
+	Default behavior is equivalent to specifying '--select-commit=HEAD'.
+
 Examples
 --------
 gitk v2.6.12.. include/scsi drivers/scsi::
@@ -101,6 +153,13 @@ Files
 Gitk creates the .gitk file in your $HOME directory to store preferences
 such as display options, font, and colors.
 
+History
+-------
+Gitk was the first graphical repository browser. It's written in
+tcl/tk and started off in a separate repository but was later merged
+into the main Git repository.
+
+
 SEE ALSO
 --------
 'qgit(1)'::