Updated runtime files.
diff --git a/runtime/doc/change.txt b/runtime/doc/change.txt
index e40805e..8cca763 100644
--- a/runtime/doc/change.txt
+++ b/runtime/doc/change.txt
@@ -1,4 +1,4 @@
-*change.txt* For Vim version 8.0. Last change: 2016 Nov 19
+*change.txt* For Vim version 8.0. Last change: 2017 Feb 12
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -635,12 +635,14 @@
For the {pattern} see |pattern|.
{string} can be a literal string, or something
special; see |sub-replace-special|.
+ *E939*
When [range] and [count] are omitted, replace in the
- current line only.
- When [count] is given, replace in [count] lines,
- starting with the last line in [range]. When [range]
- is omitted start in the current line.
- Also see |cmdline-ranges|.
+ current line only. When [count] is given, replace in
+ [count] lines, starting with the last line in [range].
+ When [range] is omitted start in the current line.
+ [count] must be a positive number. Also see
+ |cmdline-ranges|.
+
See |:s_flags| for [flags].
:[range]s[ubstitute] [flags] [count]