# Introduction Sasak UI is a web app UI based on Vaadin Framework that gives a new perspective of web app UI. Features: * Multi-tab UI, each module content contained on a tab page, including dialogs. Each tab content, including dialogs, will remain intact when users navigate between tabs, enabling users to work multi-tasking with many modules at once. * A minimum set of fixed UI components and a non-intrusive menu to maximize UI space for module contents. * Integrated templates, dialogs, and supporting components to cut minimize development time. * Mobile friendly, PWA by default. * Based on the Vaadin Framework. Vaadin is a secure server-based Java Web UI Platform. Vaadin is widely used on java web UI applications. Vaadin has an active community and has hundreds of third-party components are available on the Vaadin Directory. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.sasak-ui.com/master.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.