diff --git a/runtime/doc/pi_paren.txt b/runtime/doc/pi_paren.txt
index 29fcbd6..b3fcb7d 100644
--- a/runtime/doc/pi_paren.txt
+++ b/runtime/doc/pi_paren.txt
@@ -1,4 +1,4 @@
-*pi_paren.txt*  For Vim version 7.0c.  Last change: 2006 Mar 24
+*pi_paren.txt*  For Vim version 7.0c.  Last change: 2006 Mar 29
 
 
 		  VIM REFERENCE MANUAL    by Bram Moolenaar
@@ -38,5 +38,9 @@
 syntax items are ignored.  Any syntax items with "string" or "comment"
 somewhere in their name are considered string or comment items.
 
+The search is limited to what is visible in the window.  The plugin doesn't
+search further than 100 lines to avoid a long delay when there are closed
+folds.
+
 ==============================================================================
  vim:tw=78:ts=8:ft=help:norl: