updated for version 7.0018
diff --git a/runtime/doc/usr_21.txt b/runtime/doc/usr_21.txt
index 39ee4d2..b5484e9 100644
--- a/runtime/doc/usr_21.txt
+++ b/runtime/doc/usr_21.txt
@@ -1,4 +1,4 @@
-*usr_21.txt* For Vim version 7.0aa. Last change: 2004 Jun 16
+*usr_21.txt* For Vim version 7.0aa. Last change: 2004 Oct 10
VIM USER MANUAL - by Bram Moolenaar
@@ -65,7 +65,7 @@
:w !{program} execute {program} and send text to its input
:[range]!{program} filter text through {program}
-Notice that the presense of a range before "!{program}" makes a big
+Notice that the presence of a range before "!{program}" makes a big
difference. Without it executes the program normally, with the range a number
of text lines is filtered through the program.