@AviFS On my phone, Optima's keyboard doesn't usually open. With @dzaima 's one, I can't always find glyphs that I need (Is there a map of where every simbol is?)
@MasterQuiz in my keyboard you need to go into settings and set keyboard modes to one of the 5 row options (i have portrait as 5-row compact and landscape as full 5-row). With the compact layout, you need to swip up to get the missing characters, and then it's the regular key→APL layout, just with the keys in different places. Full 5-row always has all keys
also in settings→theme and label settings→labelled alternative keys, you can set "show all hint labels" to show one APL char hint on each key
@Wansen APL is an array-oriented programming language. It tends to let you develop shorter programs while thinking more about the problem you're trying to solve than how to express it to a computer.
We tend to decide last moment, but if you want specific topics brought up, do write to us. (Not that we're missing material; we can always continue the discussion about tacit…)