VMPrint AST Layout

What it does

A thorough practitioner's guide to the VMPrint JSON AST (version 1.1). Explains the root structure, page geometry, styles, block and inline element types, stories (multi-column), zone-maps, strips, tables, floats, drop caps, pagination controls, scripting via YAML frontmatter, and common layout patterns and gotchas. Includes concrete examples and regression fixtures for verification.

When to use it

Use this skill when you need to author, debug, or migrate documents to the VMPrint 1.1 AST: creating multi-column DTP layouts, advanced typesetting, paginated tables with repeated headers, multilingual text, or when adding document-level scripting. Also useful when migrating from AST 1.0 to 1.1 because it lists breaking changes.

What's included

• Scripts: none declared in the SKILL.md (has extensive fixtures under engine/tests/fixtures)
• References: no separate references folder listed, but the repo contains architecture and engine internals docs and regression fixtures
• Instructions: step-by-step JSON examples for every major feature, exact interface definitions for validation, fixture recommendations, and a workflow (design → measure → adjust) for iterating layouts.

Compatible agents

Best for developer-facing tools and agents that manipulate document ASTs or generate PDFs from JSON (CLI-based renderers, code-assistant workflows, and layout engines).