Preview In Browser

ID View.PreviewInBrowser
Menu View→Preview in Web Browser
Default Shortcut F12

Preview current document in embedded browser (Internet Explorer).

If the command is executed when Web Browser is active, the editor opens/activates the corresponding source of the Web page.

Calling Refresh (F5) on Web Browser preview, triggers re-read of the document source from connected source document, even if it is not saved.

If you need preview in alternative browsers, check this workaround.