HTML Xray View a page's underlying HTML by moving your mouse pointer over it. As you move your mouse pointer over the webpage, the underlying HTML elements are displayed in a ToolBox window (see pic below). Operation Notice the mouse pointer over the word 'Welcome' in the picture opposite. The HTML Xray window is displaying the underlying HTML tag. Pressing ALT+Z at this point would take you to the same element on the HTML tag view page. The content of the window can toggled frozen/normal by pressing ALT+DOWN.