1. Open Eudora pro
2. Go to help/eudora pro
3. Click on "credits"
4. Click on the CTRL button to see the comment in place of the developer's name!
Go to the help menu and select "about Eudora". You will see a button, bottom left, that says "more credits" Click it. This looks like any other scrolling list of credits EXCEPT press and hold the control button. The Windows Developers become "the Masters... more
In Eudora 5 go to the Help menu then choose 'About Eudora'. Then you click on the 'Credits' Button on the bottom right.
If you hold down the Control Key then the credits change.
I found this out after reading the 'Masters of Destruction' Easter Egg