If you want to do so, you are given the following interfaces to zephyr: Your ~/.zion.desc.pl is written in perl5, with the following interfaces to zephyr:

It's not that hard, you just have to write all the formatting yourself.

Or, you can use bert's translator. It's available in /mit/bert/project/zion/translate.pl. It works on many .zwgc.desc files.

Really though, you want to use feature based zephyr.