--- a/ListView.st	Sat Oct 10 06:57:53 2015 +0200
+++ b/ListView.st	Sun Oct 11 06:59:34 2015 +0200
@@ -3205,7 +3205,8 @@
 
 widthOfWidestLineBetween:firstLine and:lastLine
     "return the width in pixels of the widest line in a range
-     - used to optimize scrolling, by limiting the scrolled area"
+     - used to optimize scrolling, by limiting the scrolled area;
+       not for scrollbar or other width related stuff which should be exact."
 
     |max      "{ Class: SmallInteger }"
      first    "{ Class: SmallInteger }"