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If you'd want to make any sort of educational material about type design, are you allowed to use a font (with a license) in it, and show values from the font, such as the spacing and kerning values? For example, you could set a word, draw lines to show the sidebearings, and write the spacing values from within the font underneath it, to show the distance from the glyph to its sidebearing. Might be a silly question, but I'm considering making a poster, so it seems wise to be sure :)
Jasper de Waard