perlhist Perl history records
d perldelta Perl changes since previous version
-D perl591delta Perl changes in version 5.9.1
+D perl592delta Perl changes in version 5.9.2
+ perl591delta Perl changes in version 5.9.1
perl590delta Perl changes in version 5.9.0
+ perl586delta Perl changes in version 5.8.6
+ perl585delta Perl changes in version 5.8.5
+ perl584delta Perl changes in version 5.8.4
perl583delta Perl changes in version 5.8.3
perl582delta Perl changes in version 5.8.2
perl581delta Perl changes in version 5.8.1