Update runtime files.
diff --git a/runtime/doc/index.txt b/runtime/doc/index.txt
index ca52a34..577510b 100644
--- a/runtime/doc/index.txt
+++ b/runtime/doc/index.txt
@@ -1,4 +1,4 @@
-*index.txt* For Vim version 8.1. Last change: 2019 Mar 21
+*index.txt* For Vim version 8.1. Last change: 2019 Apr 05
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -1547,7 +1547,8 @@
|:sbrewind| :sbr[ewind] split window and go to first file in the
buffer list
|:scriptnames| :scr[iptnames] list names of all sourced Vim scripts
-|:scriptencoding| :scripte[ncoding] encoding used in sourced Vim script
+|:scriptencoding| :scripte[ncoding] encoding used in sourced Vim script
+|:scriptversion| :scriptv[ersion] version of Vim script used
|:scscope| :scs[cope] split window and execute cscope command
|:set| :se[t] show or set options
|:setfiletype| :setf[iletype] set 'filetype', unless it was set already