Individual skill

popl-writing-style

Use when drafting or revising POPL prose — building the informal-to-formal ramp from a motivating program to definitions to a sharply stated main theorem, keeping notation coherent across 25 pages of text, writing proof sketches that name the hard case, and framing significance as an idea other PL researchers can reuse.

POPL-Skills/skills/popl-writing-style/SKILL.md

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# POPL Writing Style

A POPL paper convinces twice: informally, that the problem is real and the idea
natural; formally, that the theorems are exactly true. The craft is the ramp between
the two. The 25-pages-of-text budget (POPL 2027 call, read 2026-07-08) is generous
compared with old conference caps — the failure mode is not compression but
*unmotivated formalism*.

## The informal-to-formal ramp

1. **Open with a program, not a framework.** Page 1 should show concrete code or a
   concrete derivation that misbehaves — the phenomenon your formalism explains.
2. **State the contribution as a sharp claim.** "We prove type soundness for λ_X
   with feature Y, the first such result without assumption Z" beats any paragraph
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