Enabled for string parameters with the options of:

• File Browser - Opens the path in which the file is located
• MPlay - Opens the file in Houdini's MPlay
• Geo Viewer (GPlay) - Opens the file in Houdini's GPlay
• DJV - Opens the file in DJV (if installed in default location)
• Photoshop - Opens the file in Photoshop

Paths to the above tools can be changed in the OPMenu.xml file in the ODTools folder.