It was while sorting through his papers some years ago that I found this fax. It was a guide to commands that would be used to program the Apple II. Dad used it for keeping his company accounts mainly with letters and shipping manifests also patiently tapped in.
This would have marked a departure for Dad: a getting to grips with the system architecture, a look under the bonnet. A logical man with a great capacity for studied reasoning, he would have loved this untapped functionality of his marvellous toy.