Mention slight performance hit (quixote/doc/PTL.txt)

Update of /home/cvs/quixote/doc
In directory hewson:/tmp/cvs-serv18561

Modified Files:
	PTL.txt 
Log Message:
Mention slight performance hit

Index: PTL.txt
===================================================================
RCS file: /home/cvs/quixote/doc/PTL.txt,v
retrieving revision 1.17
retrieving revision 1.18
diff -u -d -r1.17 -r1.18
--- PTL.txt	7 Jan 2003 16:27:48 -0000	1.17
+++ PTL.txt	7 Jan 2003 17:03:46 -0000	1.18
@@ -124,8 +124,9 @@
 
 Such bugs occur because it's easy to forget to HTML-escape a string,
 and forgetting it in just one location is enough to open a hole.  PTL
-offers a solution to this problem by optionally escaping strings
-automatically when generating HTML output.
+offers a solution to this problem by being able to escape strings
+automatically when generating HTML output, at the cost of slightly
+diminished performance (a few percent).
 
 Here's how this feature works.  PTL defines a class called
 ``htmltext`` that represents a string that's already been HTML-escaped