So after several inquiries on how the CKeeper worked, I have made a short demo of some of its features. After sitting around for 25 years I was amazed that, except for the batteries, it still worked flawlessly!
Here is the zipped demo: http://www.applefritter.com/files/ckeeper%20demo.MOV_.zip.
And here is a list of the CKeeper Extended Commands: http://www.applefritter.com/content/ckeeper-commands.
And a (25 year old) color screen dump to the Imagewriter: http://www.applefritter.com/content/ckeeper-screen-dump1.
Here is the CKeeper description from the last Ingenuity brochure: http://www.applefritter.com/content/ckeeper-brochure.