Not just slashed zeroes/ohs

[Diane Bruce]

On Wed, Apr 27, 2022 at 11:51:10AM -0600, Craig Ruff via cctech wrote:
> Having gone through many mathematics courses it was common to also place a slash on the letter Z to distinguish it from the numeral 2. Also for persons from Europe where they slashed the numeral 7 to distinguish it from a numeral 1 that commonly had an initial small upward stroke at the top when hand written.
> 

Yes. I got into the habit of slashing my 7's years ago after I saw
someone doing it. It makes perfect sense as they can look like a 1.

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