"Sol": Apparently my Word isn't set to correct Roman numerals.

LOL

Thanks to Michael for that "subtractive" thing. I'd never thought of that,
either.

Although I'd learned the subtractive version in school, I recall always seeing
the additive Roman 4s and 9s on old clocks, clocks older than I am. G
Involving the subtractive versions does seem to make it harder for me to read
some large Roman numeral numbers, like copyright dates.

Bill, K5BY