"OpenType features" can let you define variations within a font. There's a standard one for slashed vs. non-slashed zeroes (not sure about dotted): https://do

"OpenType features" can let you define variations within a font. There's a standard one for slashed vs. non-slashed zeroes (not sure about dotted): https://docs.microsoft.com/en-us/typography/opentype/spec/features_uz#a-namezero-idzeroatag-zero https://docs.microsoft.com/en-us/typography/opentype/spec/fe...