# Key features - [Features overview](https://cranford-tech.gitbook.io/charles/key-features/features-overview.md) - [Open website on install / uninstall](https://cranford-tech.gitbook.io/charles/key-features/open-website-on-install-uninstall.md) - [Get tab info](https://cranford-tech.gitbook.io/charles/key-features/get-tab-info.md) - [Get text selected by user](https://cranford-tech.gitbook.io/charles/key-features/get-text-selected-by-user.md) - [Get element text](https://cranford-tech.gitbook.io/charles/key-features/get-element-text.md) - [Get element HTML](https://cranford-tech.gitbook.io/charles/key-features/get-element-html.md) - [Set element inner text](https://cranford-tech.gitbook.io/charles/key-features/set-element-inner-text.md) - [Set element inner HTML](https://cranford-tech.gitbook.io/charles/key-features/set-element-inner-html.md) - [Open URL in sidebar modal](https://cranford-tech.gitbook.io/charles/key-features/open-url-in-sidebar-modal.md) - [Open URL in fullscreen modal](https://cranford-tech.gitbook.io/charles/key-features/open-url-in-fullscreen-modal.md) - [Copy text to clipboard](https://cranford-tech.gitbook.io/charles/key-features/copy-text-to-clipboard.md) - [Populate an input field](https://cranford-tech.gitbook.io/charles/key-features/populate-an-input-field.md) - [Simulate mouse click on an element](https://cranford-tech.gitbook.io/charles/key-features/simulate-mouse-click-on-an-element.md) - [Capture screenshot](https://cranford-tech.gitbook.io/charles/key-features/capture-screenshot.md) - [Open URL in new tab](https://cranford-tech.gitbook.io/charles/key-features/open-url-in-new-tab.md) - [Show native alert](https://cranford-tech.gitbook.io/charles/key-features/show-native-alert.md) - [Set an extension badge color and text](https://cranford-tech.gitbook.io/charles/key-features/set-an-extension-badge-color-and-text.md) - [Change extension icon](https://cranford-tech.gitbook.io/charles/key-features/change-extension-icon.md) - [Close extension](https://cranford-tech.gitbook.io/charles/key-features/close-extension.md) - [Save to Chrome storage](https://cranford-tech.gitbook.io/charles/key-features/save-to-chrome-storage.md) - [Injecting custom javascript](https://cranford-tech.gitbook.io/charles/key-features/injecting-custom-javascript.md) --- # 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://cranford-tech.gitbook.io/charles/key-features.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.