NOOOOO it was the "S" split button and off go my wingmen home and I've just started the fight....against 3x N23s.
Mmuahahahahaaa!!! "Come on, you silvery Blighters - I spit at you! Hee-haw!"
So often in life, especially at computers, it would be good if you had read the manual!
(...and remembered it...)
For this reason I have a not-so-dangerous button inbetween two serious ones.