See http://en.wikipedia.org/wiki/Artistic_License; the original version is not an FSF-recognized free software license, there are some ambiguities which are corrected in the Clarified Artistic License and the Artistic License 2.0.
A math joke: r = | |csc(θ)|+|sec(θ)| |-| |csc(θ)|-|sec(θ)| |
I'm want to make RPerl available under the same terms as Perl itself so that RPerl and Perl source code can be mixed without worrying about what license applies to what. Does that make sense?
Also, I want to write a 1 or 2 sentence explanation of how the RPerl license affects end-users, as I have already attempted to do in the RPerl FAQ. Can you please give me guidance on what you think would be accurate wording?