Update runtime files
diff --git a/runtime/doc/undo.txt b/runtime/doc/undo.txt
index 316e32f..92553ab 100644
--- a/runtime/doc/undo.txt
+++ b/runtime/doc/undo.txt
@@ -1,4 +1,4 @@
-*undo.txt* For Vim version 8.1. Last change: 2019 May 05
+*undo.txt* For Vim version 8.1. Last change: 2019 May 07
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -19,26 +19,24 @@
1. Undo and redo commands *undo-commands*
<Undo> or *undo* *<Undo>* *u*
-u Undo [count] changes. {Vi: only one level}
+u Undo [count] changes.
*:u* *:un* *:undo*
-:u[ndo] Undo one change. {Vi: only one level}
+:u[ndo] Undo one change.
*E830*
:u[ndo] {N} Jump to after change number {N}. See |undo-branches|
for the meaning of {N}.
*CTRL-R*
-CTRL-R Redo [count] changes which were undone. {Vi: redraw
- screen}
+CTRL-R Redo [count] changes which were undone.
*:red* *:redo* *redo*
-:red[o] Redo one change which was undone. {Vi: no redo}
+:red[o] Redo one change which was undone.
*U*
U Undo all latest changes on one line, the line where
the latest change was made. |U| itself also counts as
a change, and thus |U| undoes a previous |U|.
- {Vi: while not moved off of the last modified line}
The last changes are remembered. You can use the undo and redo commands above
to revert the text to how it was before each change. You can also apply the