I'll just observe that by asking for a super perldoc one-liner, it sounds to
me as if the OP is asking for a feature that would be built in to Perl or one of the
core modules; something that would perhaps exploit a "bound relationship" between a
"tagged area" and a subroutine. However, there is no such relationship under Perl. My
first thought is that the OP comes from Python and is therefore familiar with Python's
docstring data. docstring makes a brief bit of function /
subroutine documentation a part of a function object, a member, that is. Perl
doesn't have that.