Update runtime files.
diff --git a/runtime/doc/usr_11.txt b/runtime/doc/usr_11.txt
index cd0b726..bf09d2e 100644
--- a/runtime/doc/usr_11.txt
+++ b/runtime/doc/usr_11.txt
@@ -1,4 +1,4 @@
-*usr_11.txt*	For Vim version 8.1.  Last change: 2019 Jan 30
+*usr_11.txt*	For Vim version 8.1.  Last change: 2019 Feb 04
 
 		     VIM USER MANUAL - by Bram Moolenaar
 
@@ -284,6 +284,7 @@
 'shortmess' option.  But it's very unusual that you need this.
 
 For remarks about encryption and the swap file, see |:recover-crypt|.
+For programatic access to the swap file, see |swapinfo()|.
 
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 *11.4*	Further reading