diff --git a/runtime/doc/usr_41.txt b/runtime/doc/usr_41.txt
index 343d476..c7bfffd 100644
--- a/runtime/doc/usr_41.txt
+++ b/runtime/doc/usr_41.txt
@@ -987,6 +987,7 @@
 	sign_define()		define or update a sign
 	sign_getdefined()	get a list of defined signs
 	sign_getplaced()	get a list of placed signs
+	sign_jump()		jump to a sign
 	sign_place()		place a sign
 	sign_undefine()		undefine a sign
 	sign_unplace()		unplace a sign