For me, one of the most useful ones is < br >,since it gives a line break
and you can go to the next line

or skip multiple lines

And basically make paragraphs.

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There's also < hr > that makes a horizontal line and the text below it a little smaller/darker.

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Does it work more than once?

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What am I even doing now?

I imagine that comment is sarcastic lol but yeah xD

its ring in your ears its awesome

good music

I am strong I am italicized

Nope Lmao.

OK s didn't work strike to the rescue perhaps?

That's how you do size. Remembering to use the <> on the outside of what ever you you're doing, you use hr to make a line, and you only need it once in whatever place in your message you want a line, if you want it beneath some words press enter and write it underneath them. Other tricks include bolding the words or line using strong, italicizing using I, or crossing out effect using strike or s. if this works, I used s and I just googled this one which is why I'm not sure if it works lol

This is h1 in practice

this is h2

this is h3

this is h4

Depending on how big you want to make the text, you can use h1-h4 to make it happen, h1 being the biggest and h4 being the smallest. Using h1 as an example; Put h1 on both sides using <> on either side of it and on the right side put a / before the h. If you are only using h1 text in your message you can just use it on the left side without the /, but if you're planning on using two different kinds of text in one message knowing to put h1 or whatever on both sides and remembering the / on the right side is important because that's the code way of saying that you're through with using the h1