I was about to answer this in another thread, but I figured I would start a new one just so the Title was helpful if someone goes searching for it some day in the future.

Where are these commands listed? I'll never remember them. :)

They’re not that I know of. They are historical with the old Fool software, so perhaps there’s a page with them there, probably unreachable anyway.

If you like, bookmark this page and call it “Shrewdm font formatting”.

There are four formatting commands that I am aware of. The first two are easy and obvious:

1) and 2) <I> is for italic </I> and <B> is for bold </B>

3) <TT>is for monospace font </TT> with all the usual formatting characteristics: line wrap, double return between paragraphs, etc. Maybe remember it by thinking “ TeleType”, as the old line teletype machines ran in fixed-width font.

4) And <PRE> is useful for importing tables as it also uses monospace font </PRE> (so columns line up), but you have to be careful because depending on the window size of the viewer (phone, tablet, desktop, etc.) you can run things off the right hand side of the screen if you’re not careful. I have no mnemonic help for remembering this one.

One final tip: I use the “text replace” function of the iPad to type my commands.
. . . . . (Settings -> General -> Keyboard -> Text Replacement)
Bold, for instance, is 3 consecutive taps of the “B” key, and UnBold is 4 consecutive taps. That produces <b> and </b> respectively. Bingo, the machine puts in my html code and I don’t have to hunt around for carets and commands and slash marks. Likewise for “I” for italic, and “T” for the TT command. I can just machine-gun them into place as I’m typing, and there is *never* a time when I need to type 3 Bs or 3 Is in a row in any other normal text that I write.

Incidentally it doesn’t matter if you use a capital B or small b for bold, capital I or small i for italic, and so on. You can mix and match, so you can save keystrokes if that’s important depending on your device.