corrected. i'm still on the 4.x series ( a 4.9 kernel to be specific, and once it stablilzed, up to 4.10 -- didn't want to jump 2 versions ).

i did install from lang/perl5.8 .. just didn't use the use.perl port because i've never seen it before.

there doesn't seem to be a manpage or perldoc for it ...