Index: gpl/png-fix-IDAT-windowsize.1
--- gpl/png-fix-IDAT-windowsize.1.orig
+++ gpl/png-fix-IDAT-windowsize.1
@@ -1,6 +1,6 @@
 .TH PNG-FIX-IDAT-WINDOWSIZE "1" "October 2020" "png-fix-IDAT-windowsize 1.0" "User Commands"
 .SH NAME
-png-fix-IDAT-windowsize \- manual page for png-fix-IDAT-windowsize 1.0
+png-fix-IDAT-windowsize \- fix corrupt libpng 1.2.6 output
 .SH SYNOPSIS
 .B png\-fix\-IDAT\-windowsize
 .RI [ options ]
