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redline-annotation

Produces precise redline annotations - spacing, sizing, type, color, radius, z-order, and behavior notes in a consistent, scannable notation - that engineers can build from without asking questions. Use when someone asks "redline this screen", "spec this component", "annotate the spacing for handoff", or is preparing design files for development. Do NOT use for the overall handoff document with flows, edge cases, and acceptance criteria - use design-handoff-doc instead; for animation timing and easing, use motion-spec; for breakpoint behavior, use responsive-spec.

skills/redline-annotation/SKILL.md

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# Redline Annotation

Redlines eliminate guesswork. Annotate for the engineer who has never seen the design and cannot ask a question mid-sprint. The costly failure is the half-annotated file: the engineer eyeballs the missing values, QA files a stack of 2px-off tickets, and the fix cycle costs more than annotating properly would have.

## Operating procedure

### Step 1: Gather inputs

- Does a token system exist? If yes, annotate token names, not raw values.
- Is there a spacing grid convention (4px or 8px)? If yes, annotate exceptions to the grid, not the grid itself.
- Which frames and components are in scope, and does the engineer have inspect access to the design file and design system? Access changes how much must be written down.

### Step 2: Establish the notation convention
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