# Appendix A: the scar ledger {-}

In the old shops the lessons lived in the foreman. He knew which chase sprung its quoins, which press ran hot after dinner, which apprentice could not be trusted with the good ink. When he left, the shop bought every lesson again at full price. This ledger exists so ours are bought once. A scar is a lesson with a receipt: the exact symptom, the work it cost, and the law we cut into the shop rules the same week. It lives where the next edition must trip over it, and the devil reads it before every job. Nothing goes in on suspicion. Every entry below was paid for first.

**A plate taller than the page ships blank pages forever.** One book carried an engraving taller than the 7.5 inch text block, and the press raised no error. Blank page after blank page went out until someone opened the proof and found white where the chapter should be. The law: no plate exceeds 7.1 inches, and every proof gets opened to the plates before anything else.

**A list built across passes prints empty on one.** The list of plates gathers its entries over several runs. Run once and the heading stands over white space, and the build still reports success. It looks like a page reserved on purpose. The law: build through the machinery that runs until the lists converge, and treat a lone pass as no build at all.

**Links anchor at the caption, not the picture.** In one book every entry in the list of plates dropped the reader a caption's height past the plate it promised, which on a short page meant the next page entirely. Every link resolved, so every check passed. The law: after touching any link, follow it to the page that actually holds the target.

**A minimal fount installation drops glyphs without a sound.** One shop's stripped-down installation lacked the face used for keyboard text. Every character set in that face vanished from the printed page, with no warning and no substitute. The law: write the full fount list out wherever the shop gets rebuilt, because "recommended" will not pull in what the page depends on.

**Proofing yesterday's sheets blesses yesterday's work.** A verification run against sheets already sitting in the delivery room passes no matter what you broke this morning; you have proofread the past. One shop shipped a known defect with a fresh green stamp on it. The law: rebuild and verify in one motion. A bare check of standing sheets proves nothing about today.

**A pipeline answers the last question asked, not the one you meant.** One check's verdict passed through a search command on its way out, and the search's exit stood in for the check's. The search kept finding its pattern, so the pipeline kept reporting success, and failures rode out the door as passes until someone read the raw log. The law: take the signal from the tool that did the judging, and let nothing downstream speak over it.

**The first run of new machinery looks exactly like a hang.** A fresh press stalls for several minutes at full effort while it catalogues its founts, and gives no sign of life while it does. One shop killed the run twice, rebuilt twice, and lost a morning to a machine that was trying to finish. The law: learn what a first run looks like before you interrupt one, and write the warmup into the instructions for the next fresh machine.

**An index term that matches nothing sits dead for editions.** A curated term drifted out of the prose during revision and kept its line in the index, pointing at nothing. No reader complained. The law: a term with zero hits fails the build, the same as a broken page number would.

**Attributes ship as literal marks in the plainest edition.** In the edition with no italic and no bold, emphasis went out as the marks that had asked for it: asterisks framing the words they were meant to dress. The richer editions all proofed clean, so nobody looked at the poor one. The law: proof the plainest edition first. It has the least machinery standing between a mistake and the reader.

**Delivering to a new shop does not count as a change.** The machinery that watches for changes and re-hangs the public sheet never fired on the first delivery; before that delivery there was nothing to have changed from. The sheet hung blank for a day while every gauge inside the shop read green. The law: after the first delivery anywhere, walk around front and look at what the public sees.

New wounds go in the same day they close, while the receipt is still legible. A month later nobody remembers the exact symptom, and the entry that would have stopped the next repeat never gets written.
