[mpeg-OTspec] Toward a Composite Font format specification

[Thomas Phinney]

I'd advocate keeping the three different scaling factors (overall, X
and Y). I can honestly imagine plenty of use cases for them, both in
traditional and non-traditional cases.

One use for asymmetric X/Y scaling is in manufacturing small caps. One
could use a composite font mechanism to build faux small caps,
possibly scaled slightly so as to be slightly wider than strictly
proportional scaling. Ditto for creating numeric (or alphabetic)
inferiors or superiors. Using the composite font mechanism would allow
for taking the base glyphs from a heavier weight of the "same"
typeface....

cheers,

T