perllocale Perl locale support
perluniintro Perl Unicode introduction
perlunicode Perl Unicode support
+ perlunifaq Perl Unicode FAQ
perlunitut Perl Unicode tutorial
perlebcdic Considerations for running Perl on EBCDIC platforms
perlhist Perl history records
perldelta Perl changes since previous version
+ perl594delta Perl changes in version 5.9.4
perl593delta Perl changes in version 5.9.3
perl592delta Perl changes in version 5.9.2
perl591delta Perl changes in version 5.9.1