1. WHILE installing System Software (I believe 7.5 and before)

2. After the last disk (or Folder) has been read

3. But before "Finishing install..." shows up

4. Hold down OPTION & COMMAND keys and keep them down

5. When the text says "Settng Correct Desktop Pattern..."

6. A secret about box will open.

7. (May not work on newer install scripts)

8. (different for different software versions)