Forum markup feature summary?

I seem to recall being shown when I first signed up a list of convenient markup features available when composing posts. Maybe I imagined it but I cannot find that information anywhere on the site now. Could someone point me to it or create a link for it if I didn’t make that up?

its just markdown, like github uses.

Thanks; Markdown is fine. I wasn’t sure if there were site-specific features or enhancements that I was missing somewhere.