#themes

How to enable and configure related content on a post: manual item selection, automatic scoring by shared tags and category, and the render_related_items() theme function.

How theme partials work for overriding card HTML, what variables they expose, and what you can and cannot do in functions.php.

How to define, fill, and display custom structured fields on any content type using the schema editor and theme helper functions.

Reference for all PHP rendering functions available in templates: content, cards, menus, galleries, search, pagination, and SEO tags.

How to use hooks and filters to extend the CMS from your theme, plus theme options, asset helpers, and page detection functions.

All utility functions for URLs, SEO, settings, formatting, and i18n available in theme templates.

Required files, directory layout, theme.json manifest, asset naming conventions, and the pre-publish checklist for building a theme.

All theme templates and their injected variables: header.php, footer.php, home.php, single-item views, content-list.php, and page templates.

How the live theme preview works: signed HMAC token, session check, JS link rewriting, and the files involved.