I agree that texture healing is a bit too vague about that they’re really using it for. Its really for kerning pair without disruoting the monospaced grid. Maybe, since the audience for these fonts aren’t usually typographers, they should have called it Monospaced Kerning Pairs?

Texture is a term and feature of typefaces in design however. Usually described for fonts used in body text, or larger blocks of text.

While it probably doesn’t affect shorter lines of text used in most coding languages, it can be harder to read when smaller sizes are used. Monospaced MmWw are the worst culprits.

One memorable observation on typographic texture was made by Heinz Peyer, a Swiss poet, who said that reading a text composed in Helvetica was like walking through a field of stones, whereas reading a text in Syntax was like walking through a field of flowers. (23)

Form is often susceptible to logical analysis, and pattern somewhat so, but texture evades precise description because its repetitions are so numerous, its features so small, and its interactions so refined, that the multifarious complexity of the emergent image resists orderly analysis. Texture requires a holistic more than an analytic under­ standing.

—Source

Ironically the second paragraph is turning out to be largely incorrect with smarter ways to analyze blocks of typeface texture. Also this second paragraph nicely illustrates the utter wankery present in a lot of typography circles and analysis.

Gotta justify that grad school bill somehow (pun intended).