For AI agents: the complete documentation index is available at https://lazygophers.github.io/pamphlet/en/llms.txt, the full documentation bundle is available at https://lazygophers.github.io/pamphlet/en/llms-full.txt, and this page is available as Markdown at https://lazygophers.github.io/pamphlet/en/write/diagrams/gantt.md.
Pamphlet
  • English

      • Gantt charts

      What it is

      On one timeline: what starts when and runs how long.

      When to use it

      A schedule, the timing of a release, the order of dependencies.

      How to write it

      Pamphlet's own syntax — declarations first, relationships second; all seventeen kinds share this skeleton:

      :::gantt[Redesign schedule]
sections:
  Design
  Build
tasks:
  Design : Draft : 2026-03-02 : 5d
  Design : Review : after Draft : 2d
  Build : Compiler : after Review : 8d
:::

      This syntax does not render on GitHub. If you need it to, write the same diagram as a Mermaid fence instead.

      What comes out

      Drawn to SVG at compile time and inlined into the output, so the reader downloads no drawing library and makes no network request. Colours follow the theme; scroll to zoom, drag to pan, double-click to reset.

      Traps

      • The block names are fixed: sections: and tasks:
      • A task line has four parts: section : name : start : length, e.g. Design : pick an approach : 2026-03-02 : 5d
      • The section name must be declared in sections:, otherwise it reports DIAG-306 and lists the ones that were
      • Dates are always YYYY-MM-DD; {axis=%m-%d} controls how the axis is labelled