> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt ## Resource: $widget ## Article: Introduction ## Article Link: https://dev.wix.com/docs/velo/velo-only-apis/$widget/introduction.md ## Article Content: # Introduction
__Important:__ This namespace is available only in [Wix Blocks](https://dev.wix.com/docs/build-apps/develop-your-app/frameworks/wix-blocks/about-wix-blocks.md) widget code.Blocks widgets can expose a [widget API](https://support.wix.com/en/article/wix-blocks-about-the-widget-api), letting you add properties, events, and functions to your widget. The `$widget` namespace provides functionality for working with your widget's API from within the widget code.