The F is a classic; I did time one one. Not sure how important lights are. Remember that back then there were lot's of things where caps were meaningful. In

The F is a classic; I did time one one. Not sure how important lights are. Remember that back then there were lot's of things where caps were meaningful. In early Fortran (and as I recall Algol and COBOL) reserved words were all-caps, so it wasn't weird to hit the caps lock and type for a while.