Akrotiri tower 1971-ish.
A new-fangled, high-tech (cough!) thing called an Electro-writer had been installed on trial. This wonder consisted of two boxes, one in local and one in approach. Each had a pen mounted on a pantograph type thing and a roll of paper. Whatever was written on the one would simultaneously write on the other--sort of instant fax.
Just after it was installed, SATCO was in local when the thing scribbled out a noughts and crosses grid wiith an "X" in the top left sector.
SATCO took the pen and wrote out: "This is an expensive machine and should not be used for trivial time-wasting games, SATCO"
Seconds later came the reply:"This is the Station Commander. Play."
Can't remeber the SATCO's name, but the Station Master was Bill Stacey.