Or "poke" into the interpreter's ram region to do crazy things like shifting the string store to overlay the graphics ram and clearing the screen faster than any other technique by creating new blank strings and then poke the original values you peek'd out of it back.
Or spending afternoons typing in some game that was printed on the back of a magazine in assembly, and then poke 32768 and poof, game. Magic when you're 9 years old.
As an aside, reading and understanding the entire disassembled "kernal" and BASIC rom for the C-64. All of it taking up less space than just about anything on just about any site nowadays - in that respect we took a wrong turn somewhere IMnsHO. Yes, storage is cheap and bandwidth abundant but the same is true for clean water yet nobody drinks 50 litres of the stuff per day 'just because it is cheap and abundant'...
