Re: I know that printer!
I had a uni assignment for systems analysis and design bumped up from a B+to A+ as i had printed portrait on an a4 landscape printer (ie the tractor holes were on the top an bottom of my pages).
The fact that i had been sole access to the very expensive printer for 3 months and was given time to play (best job i ever had ) helped as well as very helpful IBM SE whose bacon I saved on several occassions(advice for other users of the printer) supplying me with several redbooks and internal manuals with the otherwise unpublished control codes, helped.