If the interpreter or line editor has lines of code stored in memory, show them in order.
Implemented by: dartmouth4, ansifull, decbasic, Altair, a2int, Applesoft, TI994, CBM, Atari, msatari, trs80, level2, trscolor, colormc, Sinclair, Atom, BBC, GWBASIC, MSX, bwbasic, bw32, ABasiC, QBasic, VBDOS, minibasicjs, EndBASIC
With variations: hptsb, ti994ext (protection included)
Also written as:
It's been only a matter of typing `LIST` on the BASIC screen. If there were no lines stored in memory (the ones which were typed with a line number first), usually nothing would be shown but the interpreter prompt.
LIST was especially important in machines where a real text editor was not used for writing code.