A command which initialises the interpreter for a new program to be typed in. The old program may be recovered with the OLD command provided no new program lines have been typed in or deleted and no variables have been created.
This command effectively 'removes' a program from the computer's memory. In reality, the program is still there, but BBC BASIC (Z80) has been told to forget about it.
If you have made a mistake, you can recover your old program by typing OLD. However, this won't work if you have begun to enter a new program.