[@AngelofOctober]

[h1][*h1]
[h2][*h2]
[h3][*h3]

just replace the asterisks (*) with '/' and it should work!~

'h3' is the smallest, with 'h1' being the biggest.

There should be something called a 'formatting cheatsheet' at the bottom of the page, under the reply box that has all, or at least most of the formatting options available. Should just need to hit the 'toggle' button to see everything~

Hope this helps!~