How do I set up the Document structure for an .md file?

I actually posted on another thread, but I figured maybe I'd get more help if I started my own post. I'm trying to set up a new file type for an .md file. I'm a veteran Trados user, but new to file types and regex, so forgive my extremely basic question, but how do I configure the Document structure so that Trados knows what is translatable text? I've read Paul's post about the inline tags and I think I might be able to figure those out (I'm sure I'll be back if I can't), but I can't even get Trados to display any text at all if I attempt to process the file.