Documentation updates.
diff --git a/runtime/doc/index.txt b/runtime/doc/index.txt
index 2cc17a1..f4f4061 100644
--- a/runtime/doc/index.txt
+++ b/runtime/doc/index.txt
@@ -1,4 +1,4 @@
-*index.txt* For Vim version 8.0. Last change: 2017 Jul 15
+*index.txt* For Vim version 8.0. Last change: 2017 Jul 16
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -530,6 +530,7 @@
|CTRL-W_CTRL-_| CTRL-W CTRL-_ same as "CTRL-W _"
|CTRL-W_+| CTRL-W + increase current window height N lines
|CTRL-W_-| CTRL-W - decrease current window height N lines
+|CTRL-W_:| CTRL-W : same as |:|, edit a command line
|CTRL-W_<| CTRL-W < decrease current window width N columns
|CTRL-W_=| CTRL-W = make all windows the same height & width
|CTRL-W_>| CTRL-W > increase current window width N columns