Copy checklist
==============

Spec: descriptive guidance, not a checkable rule.
It carries no forbidden and instead pair, and no `jig check` detector applies to it directly.
Section: UI writing

1. Sentence case throughout? (`I-53`)
2. Any word removable without loss? (`I-79`)
3. Key information first in every heading, link and button? (`I-54`)
4. Every heading meaningful read on its own? (`I-81`)
5. Every link naming its destination? (`I-89`)
6. Numerals as figures, formatted consistently? (`I-83`)
7. One word per concept across the whole product? (`I-87`)
8. Every error saying what happened and what to do next? (`I-90`)
9. Every figure, study, quotation and feature traceable to a source? (`I-148`)
10. Prose saying something specific, once, without formula? (`I-149`, `I-150`, `I-151`)
11. For long-form: something only the author could say, and a view? (`I-157`, `I-158`)