When using Opera, you are not required to view page source with the browser's built-in viewer. You are given the ability to change the default application for viewing code.
To change this application, first click on Opera in your browser menu which is located at the top of your screen. When the drop-down menu appears, click on Preferences... Please note that you can use the following keyboard shortcut in lieu of clicking on the menu choice: Apple (Command) + Comma
