You can use the integrated web browser to browse a website while the source is automatically validated.
1.Make sure the integrated web browser controls are available (View->Other->Integrated Web Browser Controls).
2.To view the browser, select the Browser, Vertical Split, or Horizontal Split tab in the editor.
3.Type in the URL you want to check, and then press Enter or select the Go button.
4.When the document is finished loading, the source should be validated automatically if the 'Auto Validate in Browse Mode' option is selected. If it's not, then it can be selected using the settings button on the browser toolbar.
5.You can continue using the integrated web browser like a normal browser to browse the site while checking the HTML source at the same time.