this is evidence (but not proof) that I did not contribute code for cardline.

• published: 15 Jan 2015
• views: 4

The code I was asked to add in a patch deck in 1975, did not attempt to list general binary decks. It only list EBCDIC decks. It read the deck as binary so that the run would not fail if there was a card punch error in column 1. If read as EBCDIC, a card punch error in column 1 is interpreted as "end of file". It would not surprise me if my code, doing something similar to the change made in 1974, was also added to cardline in late 1975 or 1976. For comparison, diifferent people would have been different things, and these were not coordinated. For example, at Proctor Street in 1973, Ray Pierce was changing code to remove blank pages from the print output. At the same time, David Bayly in Canberra was changing code to insert a blank page in order to minimise operator effort in tearing off a print run from the printer.