[dspillett]

In memory BBC BASIC was tokenised so for instance PRINT was stored as just the byte 0xF1, so you could write a program lister that used other language's words (I remember at least one of those existing) and it would be similarly easy to go the other way too.

[waqf]

In fact this was used in the 100% official localisation of BBC BASIC … into American. The US edition of BBC BASIC 3 would print "COLOR" instead of the obviously correct keyword "COLOUR".