This design was created with specific ergonomic objectives in mind:

1. Ease-of-vision, particularly by senior citizens. This dictated using relatively large, primary-color icons against a white background. The color scheme was devised by Mr. Gary Hoover, a retired famous movie-industry colorist and graphic artist.
2. To provide self-contained instructions. On each page, depressing the owl "professor" icon leads to one or more text instruction pages.
3. No more than two screens to operate any single device.
4. To use the hard buttons as much as possible.
5. K.I.S.S. i.e., pass the "wife" test.

Most of the graphics are original and were created with Paint Shop Pro 8. The instruction screens were created with Photoshop Elements 2.0.