Re: APL - without a shadow of doubt.
@Bronek
I realise that your question wasn't directed at me but, when I was programming in APL (SAX APL - with the SAX APL font), I carefully drew all of the APL symbols onto my keyboard with a CD marker - being sure to mark the front of the keys so that prodding with my fingers wouldn't wear my scribblings away. Eventually, of course, I didn't need to look at the markings - any more than I look at the keys when I'm typing this.
Not a trick you could do today with the fashion for low profile chiclet keys!
Biting the hand that feeds IT
