From a review on the iOS version:
If the Documentation reader were to retain where the user was when they switch to the split to try the given examples, it would reduce frustration immensely.
Words tab: Pursuant to the problem of figuring out what the system-creator prefixed words with, or just finding the little buggers in the first place, there needs to be some kind of lookup. If it recognized subsets of words and made a list, it would become useful. Like the documentation, it ought to be able to keep your place, and it might keep your last search, but currently, switching tabs returns the Words tab to the beginning.
These are definite UX problems that I will work to rectify for the 2021.4 release on iOS / macOS.