Easy Tape is an "Adding Machine" with a correctible "tape" of up to 999 items. All it does is Add and Subtract, but Boy oh Boy, does it ever Add and Subtract! (It Multiplies and Divides like a calculator too but its real strength is in managing lists).

Genesis, Evolution and Discussion of Easy Tape is here:
Your comments are sought as well.

The code is over 3,000 lines (some would say "Bloated") so I uploaded it (see attachment) instead of posting it here. To see Easy Tape features, click on the link below.
Attached Files