Update runtime files.
diff --git a/runtime/doc/sign.txt b/runtime/doc/sign.txt
index 115e1fa..12b7fb6 100644
--- a/runtime/doc/sign.txt
+++ b/runtime/doc/sign.txt
@@ -1,4 +1,4 @@
-*sign.txt* For Vim version 8.1. Last change: 2018 Dec 21
+*sign.txt* For Vim version 8.1. Last change: 2018 Dec 26
VIM REFERENCE MANUAL by Gordon Prieur
@@ -279,8 +279,11 @@
:sign place List placed signs in all files.
+:sign place group=*
+ List placed signs in all sign groups in all files.
+
:sign place group={group}
- List placed signs in all sign groups in all the files.
+ List placed signs with sign group {group} in all files.
JUMPING TO A SIGN *:sign-jump* *E157*