And for posterity by focus mode I meant that there’s a mode where you can manually control the focus of the camera, at least on my phone
Ah yes! It’s pretty cool that you have focus peaking too so you can see exactly where the focus is while you are dialing it in. Helpful for macro shots etc.
This should be obvious, but even children will invent basic language. You only need to look as far as the deaf community for that, that always came up with pidgin languages even as they were forced to try and learn spoken language.
There’s an interesting free short documentary here: https://www.bslzone.co.uk/watch/history-deaf-education-1