Perl subroutine documentation -

possible duplicates:
does perl have java/php docs?
what's best way document perl code?

is there way write subroutine docs?
such as

sub add {
#docs: subroutine adds 2 numbers
}

, extract info later?

the standard method writing perl documentation pod. perldoc command extract pod , display nicely you. can use various tools pod2html turn html.