The DOS version was used for this review. When you receive the demo software, you also receive an instruction sheet for installing the program. As a diehard DOS fan, I liked the speed with which the program responded to commands - even when I was running it through Windows 3.11. Some DOS programs allow you to use a mouse, although this one doesn't. For the most part, you use the arrow keys and the function keys across the top of your keyboard to navigate through menu selections.
Menus are simple and straightforward.
You select the function you want, use your arrow key to highlight it, and press enter. There's an information line across the bottom of the screen that tells you which function keys are active and what they do, so you always know what's available. Although you don't get the fancy graphics and icons that you do in Windows programs, the DOS screens are colorful, which helps make them easy to use because it sets off important areas. Data entry sections also are simple. Because this is a modular system, you can select the applications you need and build from that point.