Editing documents by voice... Is it possible? How?

I'm experimenting with dictation in Windows 11 because I want to be able to write emails and such without using my hands. The dictation process itself works pretty well, but I can't find any instructions for editing what I've dictated.

I'm trying to do it by intuition, which sometimes works, and sometimes doesn't.

“Select” sometimes works and sometimes does nothing,. So far i haven't figured out why.
Some commands produce bizarre results. For example, “scratch that” sometimes deletes the sentence preceding the one the insert point is in, even though that's not the last thing I wrote.
For another example, when I dictated “Windows 11” above it was written in lower case. Then I said “select windows 11,” and it correctly selected that phrase; then I said “capitalize that,” and it capitalized the whole sentence instead of the selected phrase.
How to move the insert point? How to correct a misidentified word? How to spell out a difficult word or an arbitrary series of characters, or tell it to simulate a key press such as F4 or Shift+F3? All mysteries.

I need a reference that tells me what commands it will recognize and what they do. So far all I have found is “instructions” for using the feature, which basically tell me to click the “Dictate” button and talk, as if that's all it does

Please, please, tell me there is some documentation.