There are three keys for telling PIPPIN to forget instructions and to remember them. PIPPIN will remember things even when turned off, so don't forget that there may be a program inside when you turn it on.
stands for Clear Memory. This key will make PIPPIN forget all the instructions in its program. When you press , PIPPIN will forget everything you have told it.
stands for Clear Entry. If you make a mistake in entering a program, you can rub it out with .
tells PIPPIN to forget the last command (white key) together with any numbers that go with it. If you make a mistake putting a number in you will have to re-enter the command as well as the number.
Every time you press , PIPPIN will forget the last command in its program. If you press often enough PIPPIN will forget everything. You can tell what is the last instruction in PIPPIN's memory by pressing .
If you press when PIPPIN has nothing in its memory, PIPPIN will grumble at you.
stands for Restore Memory. Sometimes you might press or by mistake and can help you recover your work. will restore PIPPIN's program to the last complete program it had. If you have entered an instruction after rubbing something out, PIPPIN cannot restore the old program.