Also, some typewriters did not have !: you had to type ' BACKSPACE .
Vaguely related to people typing O for 0 and l for 1: UK number plates do not distinguish between 0 and O and between 1 and I so software that handles registration numbers must take account of that.
Vaguely related to people typing O for 0 and l for 1: UK number plates do not distinguish between 0 and O and between 1 and I so software that handles registration numbers must take account of that.