updated for version 7.0021
diff --git a/runtime/optwin.vim b/runtime/optwin.vim
index 85e201c..f6dbf35 100644
--- a/runtime/optwin.vim
+++ b/runtime/optwin.vim
@@ -1,7 +1,7 @@
" These commands create the option window.
"
" Maintainer: Bram Moolenaar <Bram@vim.org>
-" Last Change: 2004 Jul 05
+" Last Change: 2004 Dec 09
" If there already is an option window, jump to that one.
if bufwinnr("option-window") > 0
@@ -889,6 +889,8 @@
call <SID>BinOptionG("ar", &ar)
call append("$", "patchmode\tkeep oldest version of a file; specifies file name extension")
call <SID>OptionG("pm", &pm)
+call append("$", "fsync\tforcibly sync the file to disk after writing it")
+call <SID>BinOptionG("fs", &fs)
if !has("msdos")
call append("$", "shortname\tuse 8.3 file names")
call append("$", "\t(local to buffer)")