As I said in my previous video, Rockstar used a keyboard to debug in-game missions in GTA SA. Today I figured out that they used 57 different keys and I told you only about "mission skip" thing.
https://twitter.com/NationalPepper/status/1210126375711117313 …
After looking through GTA SA "main.scm" I can say for sure that the developers left a lot of debug stuff in it.
Sadly, you can't accessed these features, because the opcodes were either cut or disabled. 
pic.twitter.com/TDKeajljo5
pic.twitter.com/TDKeajljo5
