I once included this video in something similar (also relating to SAGE) as the help option, see this easter-egg: http://www.masswerk.at/google60/?q=list%20games (option 4)
(Edit: Similar just intention-wise, else much simpler, since just in ASCII, meant to be EBCDIC.)
BTW: "System Technology" (SDC, 1960) is also an impressive source in this context: https://www.youtube.com/watch?v=Yqu3YX2cLA8