=head1 NAME
-perldelta - what is new for perl v5.9.0
+perl590delta - what is new for perl v5.9.0
=head1 DESCRIPTION
perlreref has been added: it is a regular expressions quick reference.
-=head1 Performance Enhancements
-
=head1 Installation and Configuration Improvements
The UNIX standard Perl location, F</usr/bin/perl>, is no longer