This is one small but powerful functionality given by Visual Studio for easily managing some external tools in your application.
Using this functionality you will be able to add some external applications like window explorer, MS Paint, Calculator, Browser Instance etc… Moreover it also provide some options to add argument for those external tools. It will help you to add customized shortcut to different appliocation in you Visual Studio menu.
Go To Tools –> External Tools. :It will open another window where we can add properties for the external tool.
Title: The text that will displayed in the menu.
Command: The command for that particular tool (like calc.exe for calculator explorer.exe for windows explorer ). Also you can browse and add your exe file path.
Argument: This is one optional parameter for adding the argument to the command
Example: If you want to add window explorer tool to visual studio and want to customize so that it will show you the current directory, then add following parameters.
TITLE : Window explorer [Anything you want to be displayed in the menu]