List the amount of memory currently in use.
15kB (18%) Program (528 lines)
23kB (28%) 52 Variables
17kB (21%) General
28kB (33%) Free
Program memory is cleared by the NEW command. Variable and the general memory spaces are cleared by many commands (eg, NEW, RUN, LOAD, etc) as well as the specific commands CLEAR and ERASE.
General memory is used for fonts, file I/O buffers, etc.