A line with a number is stored as part of the program.
A line without a number runs straight away.
Try: 10 PRINT CHR$(205.5+RND(1));:GOTO 10, Return, then RUN.
move the cursor anywhere. Change a line on screen and press Return to store it again.
Backspace
delete. Shift+Backspace inserts a space.
Ctrl+L
clear the screen
Cmd/Ctrl+V
paste a whole program
Commands
RUN
start the program
LIST
show it (LIST 10-50)
NEW
forget it
SAVE "NAME"
keep it in this browser
LOAD "NAME"
get it back. LOAD "$" lists what you saved.
Handing in
link copies a web address that opens your program; paste it anywhere.
save downloads it as a text file.
The language
PRINT, GOTO, IF…THEN, FOR…TO…STEP / NEXT, GOSUB / RETURN, INPUT, GET, DIM,
READ / DATA / RESTORE, DEF FN, ON…GOTO, POKE / PEEK, END, STOP, CONT, REM.
Functions: RND INT ABS SGN SQR SIN COS TAN ATN EXP LOG CHR$ ASC LEN LEFT$ RIGHT$ MID$ STR$ VAL TAB( SPC(.
The screen starts at address 32768: POKE 32768,81 puts a ball in the top left corner.