OpenType has an extension that allows you to define multiple weights. It doesn't seem nearly as powerful as METAFONT, though; you can just specify a set of offs

OpenType has an extension that allows you to define multiple weights. It doesn't seem nearly as powerful as METAFONT, though; you can just specify a set of offsets to apply to each point in each letter shape: https://docs.microsoft.com/en-us/typography/opentype/spec/otvaroverview#variation-space-default-instances-and-adjustment-deltas https://docs.microsoft.com/en-us/typography/opentype/spec/ot...