Kerning

Adjusting the space between one specific pair of letters, because some pairs leave a hole that the general spacing cannot fix.

Near it

measured on this shelf	80 of the 84 files carry a GPOS kern feature, holding between 1,766 pairs (Drew Poster Black) and 6,416 (Drew Slab Bold), median 3,724	read off all 84 files with fontTools on the fixed shelf, 2026-09-29, counting each explicit pair once and each class pair with a nonzero adjustment once. The 1,881 to 6,558 this row carried were counted on 2026-09-11 by a method it did not record, on a build that was replaced before it shipped, and no count reproduces them on the shelf that did
the four exceptions	the Drew Mono weights carry no GPOS table at all	which is the face being consistent rather than unfinished: a kern moves one glyph relative to the next, and a monospaced face whose advances are all equal has nothing it may move

the distinction worth keeping, kerning is per-pair, tracking is across a run