diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index f874b07..f43edf8 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -774,6 +774,9 @@
 	rename()		rename a file
 	system()		get the result of a shell command as a string
 	systemlist()		get the result of a shell command as a list
+	environ()		get all environment variables
+	getenv()		get one environment variable
+	setenv()		set an environment variable
 	hostname()		name of the system
 	readfile()		read a file into a List of lines
 	readdir()		get a List of file names in a directory
@@ -903,6 +906,7 @@
 	getwinposy()		Y position of the Vim window
 	balloon_show()		set the balloon content
 	balloon_split()		split a message for a balloon
+	balloon_gettext()	get the text in the balloon
 
 Vim server:					*server-functions*
 	serverlist()		return the list of server names