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Metafont is a programming language designed by Donald Knuth for the creation of vector fonts. It uses mathematical descriptions to express shapes, allowing for high-quality typesetting. Metafont operates by describing each character's shape in terms of precise geometric formulas, not as a collection of dots or pixels. These formulas can be manipulated to produce different variations of the same basic font design. The resulting fonts are resolution-independent, meaning they can be scaled to any size without losing detail or causing jagged edges like bitmap fonts often do at lower resolutions. Though it never gained widespread use compared to other font creation tools, Metafont remains an influential predecessor to modern font technologies and is still employed in some technical and academic publishing contexts where exacting typographic quality is paramount.