in working on a ruby wiki i'm considering using RD for the general markup like 
RWiki does. but i haven't been able to decipher how to use RDTool from within 
my own scripts. can anyone offer some pointers?

a little more detail: i have wiki pages that contain a mixture of HTML and RD, 
and i'd like to parse them, turning the RD portions into HTML using RDTool if 
possible.

thanks,
transami