Use Typo Metrics

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1

What does the “Use Typo Metrics” parameter do?

Thanks!

2

See the handbook, in the Appendix:

Use Typo Metrics boolean If checked, applications that respect this setting (in particular, versions of Microsoft O ce since 2006) will prefer typoAscender, typeDescender, and typoLineGap over winAscent and winDescent for determining the vertical positioning. Default is o . Corresponds to bit 7 (‘don’t use Win line metrics’) in the OS/2 table fsSelection field. According to the MakeOTF User Guide, this bit was introduced ‘so that reflow of documents will happen less often than if Microsoft just changed the behaviour for all fonts.’

3

Thank you Mekkablue. Sorry fot the blunt question: So it’s recommended to have “Use Typo Metrics” checked?
According to what the MakeOTF User Guide says it seems like it is.

4

Only if you prefer typoAscender, typeDescender, and typoLineGap over winAscent and winDescent.