Documentation updates.
diff --git a/runtime/doc/windows.txt b/runtime/doc/windows.txt
index fac7381..d3cf69e 100644
--- a/runtime/doc/windows.txt
+++ b/runtime/doc/windows.txt
@@ -1,4 +1,4 @@
-*windows.txt*   For Vim version 8.0.  Last change: 2016 Dec 01
+*windows.txt*   For Vim version 8.0.  Last change: 2017 Jul 23
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -222,6 +222,11 @@
 		When a count is given, it becomes ":split #N", split window
 		and edit buffer N.
 
+						*CTRL-W_:*
+CTRL-W :	Does the same as typing |:| : edit a command line.  Useful in a
+		terminal window, where all Vim commands must be preceded with
+		CTRL-W or 'termkey'.
+
 Note that the 'splitbelow' and 'splitright' options influence where a new
 window will appear.
 
@@ -1272,6 +1277,9 @@
 		and can't be changed.  The 'buflisted' option will be reset
 		for a help buffer.
 
+terminal	A terminal window buffer, see |terminal|. The contents cannot
+		be read or changed until the job ends.
+
 directory	Displays directory contents.  Can be used by a file explorer
 		plugin.  The buffer is created with these settings: >
 			:setlocal buftype=nowrite