What is a Cabinet?
Data
File types
Markdown page

Markdown page

Files: *.md, plus any folder with an index.md at the root.

The most common file type in a cabinet. Renders in the WYSIWYG editor with a source toggle so you can see and edit the raw markdown anytime.

This page itself is a file-types/markdown/index.md file. You're looking at the rendered version.

What makes a markdown page first-class

  • The editor parses and writes GFM markdown (tables, task lists, fenced code, autolinks).
  • Extended HTML inside the markdown roundtrips cleanly — <mark> highlights, <span style> colors, callouts, embeds.
  • A page can have YAML frontmatter for metadata Cabinet reads (title, tags, modified date, custom fields).
  • A page becomes a sidebar node when it sits in a folder with the right structure.

Frontmatter

---
title: "GTM Lead — launch checklist"
tags: [marketing, launches, q3]
created: "2026-04-12T09:00:00Z"
modified: "2026-05-04T15:42:00Z"
order: 5
status: "draft"
---

# Page body in markdown
FieldUsed for
titleSidebar label, page header, OG title.
tagsFilter the sidebar, search facet, agent context.
created / modifiedSort, recency surfaces, "last updated" hints.
orderOverride alphabetical sort within a folder.
statusdraft badge in the UI.
googleIf set, the page becomes a Google Workspace page.
Anything elseStored verbatim. Available to agents as context.

index.md and folder pages

A folder becomes a navigable page when it contains an index.md:

launches/
├── index.md            ← this folder is a page
└── 2026-q3/
    ├── index.md        ← so is this one
    ├── plan.md
    └── screenshot.png

The folder's index.md shows when you click the folder. Other markdown files in the folder appear as siblings in the sidebar tree.

What you can put in the body

Everything the editor supports:

  • Headings, lists, checklists, tables, blockquotes, code fences.
  • Inline formatting and Cabinet highlights.
  • Wiki-links and @-mentions for AI context.
  • Math, callouts, embeds, images.
  • Plain HTML for anything markdown can't express.

Read on