My friend Mark [1] informed me that my new keyboard [2] is intended to be used on the airline reservation system SABRE (Semi-Automated Business Research Environment) [3]. It makes sense that IBM (International Business Machines) [4] would make such a keyboard, seeing how they initially developed the SABRE (Semi-Automated Business Research Environment) system. He also sent a link to a similar keyboard for sale [5] (although it has the numeric keypad unlike mine) and the markings on the keys do match.
So I guess that means I can book flights directly. Neat!