This add-on can launch any application, like your source editor, directly from your webpage. Just select the filename in you webpage and right-click, and select "Open with ..." to launch the filename in your editor. To make this work the scripts should display their source filenames in the webpage, like for example "c:\project 1\footer.htm" or "c:\project 2\index.php". You can use a delimiter around your filenames to make them easier to select. All extra selected characters around your filename will be removed before passing it to your editor. A good delimiter would be the asterix (*), because a filename cannot contain an asterix. So you filename could look like: "*c:\project 1\header.js*".