Can we get a BBCode how-to doc for simple machines?

[Joshex]

it would be nice to have a reference doc for what is allowed and how it works in BBCode here

for example, some things are not in the menus but work. such as;

Grey color text is not in the change color menu, but loookie here it works.

[color=a3a3a3] I tried hex colors it doesn't seem to respond to those.[/color]