Last modified date on Parrot Documentation

Hi It would be nice if the documents at http://www.parrotcode.org/docs/ were equipped with last modification date. /Rene

grammar: difference between rule, token and regex

Hi I am toying around with Parrot and the compiler tools. The documenation of Perl 6 grammars that I have been able to find only describe rule. But the grammars in Parrot 0.4.4 for punie and APL use rule, token and regex elements. Can someone please clarify the difference between these three