This is pretty cool for the large text Bevo!
Gonna piggyback this with some additional resources.
Here's the one pager API cheat sheet I made a few years ago

And a simple bctext CLI utility. I use this on my node to periodically send arbitrary data.
https://github.com/vicariousdrama/bctext
Example using bctext
https://github.com/vicariousdrama/howto/blob/main/bitcoin/bctext-blockclock-7day-closing-values.md