_BROWSER System Variable
Specifies the name of the class browser application to use for browsing classes.
Specifies the name of a class browser application. By default, _BROWSER is set to Browser.app, which is installed in the same directory as Visual FoxPro. For more information, see Operating the Class Browser.
If the class browser is in a directory or folder other than the current default directory or folder, include a path when specifying the class browser application name.