This version of the Abacus is a Word add-in file, much like a very large macro. The program is installed with Word so that it starts when Word starts, and is unloaded from your computer's memory when you close Word.

The Abacus (version 3.0) operates from within Word and is integrated more tightly with Word. It runs on any 32 bit version of Windows and works with Word 97 through 2002.