diff --git a/runtime/doc/autocmd.txt b/runtime/doc/autocmd.txt
index 6480d72..5eb1936 100644
--- a/runtime/doc/autocmd.txt
+++ b/runtime/doc/autocmd.txt
@@ -1,4 +1,4 @@
-*autocmd.txt*   For Vim version 8.1.  Last change: 2019 Mar 13
+*autocmd.txt*   For Vim version 8.1.  Last change: 2019 Apr 04
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -52,7 +52,7 @@
 2. Defining autocommands				*autocmd-define*
 
 							*:au* *:autocmd*
-:au[tocmd] [group] {event} {pat} [nested] {cmd}
+:au[tocmd] [group] {event} {pat} [++once] [++nested] {cmd}
 			Add {cmd} to the list of commands that Vim will
 			execute automatically on {event} for a file matching
 			{pat} |autocmd-patterns|.
@@ -60,7 +60,13 @@
 			:autocmd and won't start a comment.
 			Vim always adds the {cmd} after existing autocommands,
 			so that the autocommands execute in the order in which
-			they were given.  See |autocmd-nested| for [nested].
+			they were given.
+			See |autocmd-nested| for [++nested].  "nested"
+			(without the ++) can also be used, for backwards
+			compatibility.
+							*autocmd-once*
+			If [++once] is supplied the command is executed once,
+			then removed ("one shot").
 
 The special pattern <buffer> or <buffer=N> defines a buffer-local autocommand.
 See |autocmd-buflocal|.
@@ -128,10 +134,11 @@
 ==============================================================================
 3. Removing autocommands				*autocmd-remove*
 
-:au[tocmd]! [group] {event} {pat} [nested] {cmd}
+:au[tocmd]! [group] {event} {pat} [++once] [++nested] {cmd}
 			Remove all autocommands associated with {event} and
-			{pat}, and add the command {cmd}.  See
-			|autocmd-nested| for [nested].
+			{pat}, and add the command {cmd}.
+			See |autocmd-once| for [++once].
+			See |autocmd-nested| for [++nested].
 
 :au[tocmd]! [group] {event} {pat}
 			Remove all autocommands associated with {event} and
@@ -1473,7 +1480,7 @@
 an autocommand, Vim does not execute the BufRead and BufWrite autocommands for
 those commands.  If you do want this, use the "nested" flag for those commands
 in which you want nesting.  For example: >
-  :autocmd FileChangedShell *.c nested e!
+  :autocmd FileChangedShell *.c ++nested e!
 The nesting is limited to 10 levels to get out of recursive loops.
 
 It's possible to use the ":au" command in an autocommand.  This can be a