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Come From

I once suffered an excruciating half hour after happening across an ancient December 1973 copy of Datamation in the Oxford University Computing Service Library. I didn't want the librarian to realise I was having any more fun than I would be if reading about — say — Fortran COMMON block semantics or C's multifarious compiler flags. But in fact, I was biting my lip and holding my breath, fighting not to laugh out loud at the COME FROM statement: explained by R. Lawrence Clark in We don't know where to GOTO if we don't know where we've COME FROM.