i am sure you are pulling my leg as you airliners want to tell me not to know
abbriviations used in the trade for years before the present communication
by computer was introduced?
It would be no surprise then that many school leavers in England actually write job application letters in sms!!
Nick....many school leavers in UK can't spell or add up either,then go to university!
Hmmm, 1 and 1 is eleven if I recall my school days

I can even remember the days before pocket calculators were invented! And to think that Concorde was designed on paper with slide rules. Amazing really.