How do I do different fonts?

I know how to make things Italic, but I can't seem to figure out how to make things bold. Can anyone help?

You make things bold with two asterisks ** holla ** (minus the spaces)

holla

You can also make things bolded and italicized with three asterisks

like this

And if you want, you can quote someone's comment with the three blue dots next to their comment, then select quote, and it'll show you.

Thank you!

Italic is an * on either side of what you want italicized. Like *example * but without the space.
Bold is the same as italics but with two. **example **
You can also add them together so you have three * to get bold and italic
You can get _{small text} by putting < sub > in front of the thing you want small with out the spaces and put < /sub > at the end of what you want small

Thanks!