I actually took a few minutes and opened some example .fs2 files and deduced a few things by context. I've played around with the text and was actually able to effect some of the changes I'd like to see on an existing user-created mission just as a jump-off point.
What would be really helpful is a list of possible variables, or terms in text form that would be equivalent to the options allowed in the editor. I'm curious if this already exists somewhere, otherwise I'll muddle through. Does this exist somewhere?