Back in early 2017, David Berlow
proposed a number of parametric design axes for use in variable fonts. In work commissioned by Google Fonts, many of the proposed axes were demonstrated in a preliminary release of the Amstelvar font. More recently, Google Fonts has used several of these in the
Roboto Flex font, and has documented use of several for fonts in their catalog—see
Introducing Parametric Axes.
I'm curious to know whether any of these are being used independently, in projects not connected to Google Fonts? Also, are these being used just for font design- or build-time purposes, or are they being used with the intent of "knobs" that end users / typographers or software algorithms can used to control text styling and layout?
XTRA
Parametric Counter WidthXOPQ
Parametric Thick StrokeYOPQ
Parametric Thin StrokeYTAS
Parametric Ascender HeightYTDE
Parametric Descender DepthYTFI
Parametric Figure HeightYTLC
Parametric Lowercase HeightYTUC
Parametric Uppercase Height
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