Update runtime files
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 2f69049..b2b79cb 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt* For Vim version 8.2. Last change: 2021 May 15
+*options.txt* For Vim version 8.2. Last change: 2021 May 16
VIM REFERENCE MANUAL by Bram Moolenaar
@@ -7495,6 +7495,8 @@
'switchbuf' 'swb' string (default "")
global
This option controls the behavior when switching between buffers.
+ Mostly for |quickfix| commands some values are also used for other
+ commands, as mentioned below.
Possible values (comma separated list):
useopen If included, jump to the first open window that
contains the specified buffer (if there is one).