Two galley-only typographic devices: a circle marker in the triple line break before the yrstruly section (p. 128), and no quarter-circle corner device on p.…

This concerns the book's apparatus (its title, endnote system, or text-state) rather than a single scene.

In the galley proofs. The 1995 galley proofs: "IN THE GALLEYS THERE IS A CIRCLE MARKER IN THE TRIPLE LINE BREAK BEFORE "It was yrstruly..."" and "the galleys does not have the quarter circle in the bottom right corner of the page" [sic] (both as the capture has them).

In the published book. Scene 40 area (p. 128) and scene 185 (p. 981)

Evidence. A single source reports this. Documented by the DFW Words galley-versus-first-printing collation.

Further notes. section-break apparatus was still being settled at galley stage; the p. 981 corner device (present in print) arrived only at the hardcover. Physical-book curiosity tier — but the p. 128 circle marker is a candidate ancestor of the print's section-separator conventions if a design history ever matters. Later-stratum extension: the p. 981 device now has a FOUR-state history — absent from the galleys, present in the hardcover, then evidently absent from intermediate paperbacks, and restored in the 2016 anniversary reset, where it "makes its first appearance since the hardcover, but is cut off way too much" the DFW Words 20th-anniversary collation.