That's why I started the perlhints project for Perl 6.

I personally believe that this is a fantastic idea. I have thought of it myself, but in the form of a Perl function or method that would do what you propose by extracting the appropriate perldoc documentation as needed - as opposed to yet another external tool. IMHO this would fit nicely in the philosophy of a closer integration between code and documentation and for interactive testing as in the debugger, or pugs itself, not to mention the integration with IDEs and smart editors. After all we can do things like

pugs> say &map.signature;
:(@?2 is copy, @?1 is copy)
[download]

Why shouldn't we be allowed to do

pugs> say &map.doc;
Here goes the explanation for map...
[download]

too?

So, huh, we will be able to build up our future for our children.