The board uses basic markdown. A cheatsheet can be found here:
Markdown Guide Cheatsheet

You can use the split preview to see how your message will be formatted.

For italics, *wrap your text in asterisks*:
wrap your text in asterisks

For bold, **use double asterisks**:
use double asterisks

Headings can be made using the #:

`#` This is the biggest heading

`##` This is the second heading

And so on. Most of the basic markdown functions described in the cheatsheet should work here, including ordered lists:

and unordered lists:

In a reply to this post, I'll test some extended markdown functionality.