diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index 7ef10e3..9f2442e 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -1,4 +1,4 @@
-*usr_41.txt*	For Vim version 7.4.  Last change: 2015 Nov 30
+*usr_41.txt*	For Vim version 7.4.  Last change: 2016 Jan 28
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -893,6 +893,14 @@
 	assert_false()		assert that an expression is false
 	assert_true()		assert that an expression is true
 
+Inter-process communication:
+	connect()		open a channel
+	disconnect()		close a channel
+	sendexpr()		send a JSON message over a channel
+	sendraw()		send a raw message over a channel
+	jsonencode()		encode an expression to a JSON string
+	jsondecode()		decode a JSON string to Vim types
+
 Various:					*various-functions*
 	mode()			get current editing mode
 	visualmode()		last visual mode used