Please see the VMS README file.

Modules in /perl/nmanual/vms

perlvms
VMS-specific documentation for Perl

VMS::Filespec
convert between VMS and Unix file specification syntax
VMS::XSSymSet
keep sets of symbol names palatable to the VMS linker
vmsish
Perl pragma to control VMS-specific language features

VMS::Stdio

VMS::DCLsym
Perl extension to manipulate DCL symbols