comment: url for CGI::Request installation

webtools/graph/graph.cgi

@@ -1,7 +1,7 @@
 #!/usr/bin/perl
 # -*- Mode: perl; indent-tabs-mode: nil -*-
 use CGI::Carp qw(fatalsToBrowser);
-use CGI::Request;
+use CGI::Request; # http://stein.cshl.org/WWW/software/CGI::modules/
 use Date::Calc qw(Add_Delta_Days);  # http://www.engelschall.com/u/sb/download/Date-Calc/
 
 my $req = new CGI::Request;