This is a demo announcement, dismissible and configured in site.json.

Features


Writing Pages

Front matter reference and how headings drive navigation, search and deep links.
Admonitions

Callout boxes with GitHub-compatible syntax: note, tip, important, warning, caution.
Code Blocks

Syntax highlighting, filename titles, highlighted lines, line numbers, wrap toggle and Mermaid diagrams.
Images and Links

Figures with captions, click-to-zoom lightbox, remote image fetching and link validation.
Badge

Inline pill labels for annotating features, status and version information.
Cards

Responsive grid of linked or static cards for section overviews and feature grids.
Columns

Place two or three blocks of content side by side in a responsive grid.
Details

Collapsible sections using the native HTML details element. No JavaScript required.
draw.io

Embed and render interactive draw.io diagrams with zoom and pan.
File tree

Styled directory tree for showing project or repository structure.
Math

Render LaTeX math expressions in your docs using KaTeX.
OpenAPI

Full API reference rendered from an OpenAPI or Swagger spec, offline and theme-aware.
PDF embed

Inline PDF viewer with a fullscreen expand button.
Steps

Numbered procedural steps with a visual connecting rail.
Tabs

Tabbed content with synced groups and a persisted choice, ideal for OS or language variants.
Video and iframe

Embed YouTube videos, Vimeo videos, self-hosted video files and general iframes.
Search

Client-side full-text search scoped to the current version and language.
Navigation

Sidebar, on-this-page column, breadcrumbs, prev/next and keyboard shortcuts.
Versioning

Tag-based versioning with an automatic pipeline, version pickers and outdated banners.
Page extras

Announcement bar, edit links, feedback widget, last-updated date and the changelog.
Print and handbook

One-click printable handbook plus PDF export via any HTML-to-PDF tool in CI.
SEO and AI readability

Open Graph, hreflang, structured data, llms.txt and per-page markdown outputs.