= Outline font
An outline font stores <glyph> shapes as geometric boundaries that can be scaled before drawing. <Bézier curves> provide editable segments of these boundaries. TrueType outlines use quadratic <Bézier curves>; Type 2 charstrings used in Compact Font Format outlines use cubic <Bézier curves>. https://learn.microsoft.com/en-us/typography/opentype/spec/ttch01[OpenType specification, TrueType fundamentals: outlines]{ref} https://adobe-type-tools.github.io/font-tech-notes/pdfs/5177.Type2.pdf[Adobe, The Type 2 Charstring Format, section 4.1]{ref}
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