MoinMoin CGI and Query String Parameters

Question

I've just chosen MoinMoin over TWiki to create a simple-but-robust web site. In addition to zero ramp-up and very basic authentication and Wiki features, I need to execute a few simple scripts that take the user's ID and email address as parameters.

TWiki supported this with:

[[/cgi-bin/mywiki/userscript?id=%USERNAME%&email=%USERINFO{format="$emails"}%][Execute personalized script for %USERNAME%]]

I've scoured the docs and the web; I'm guessing I want something like:

[[GetVal(WikiDict,UserName)]]

... but I haven't gotten the details right. Can anyone point me to an example?

Thanks for your help!