> I personally stay away from the symbol and write "ohm" specifically when
> necessary.

"R" seems to be accepted as well if there's no other quantifier, 2R2 for 2.2
ohms, 100R for 100 ohms, 1k for 1000 ohms. You will see 1k'omega', but
not 1kR, as 'R' isn't a resistance unit as such

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