Associating a File Extension with Oxygen XML Editor plugin

To associate a file extension with Oxygen XML Editor plugin on Windows:
  1. Go to the Windows Start menu and open Control Panel.
  2. Go to Default Programs.
  3. Click Associate a file type or protocol with a program.
  4. Click the file extension you want to associate with Oxygen XML Editor plugin, then click the Change program button.
  5. In the subsequent dialog box, browse for and choose Oxygen XML Editor plugin.
  6. Click OK.
To associate a file extension with Oxygen XML Editor plugin on Mac OS:
  1. In Finder, select a file and from the contextual menu select Get Info.
  2. In the Open With subsection, select Other from the application combo box.
  3. Browse to and select Oxygen XML Editor plugin.
  4. Select the Always Open With option, then click Add.
  5. If you want all files of that type to be opened in Oxygen XML Editor plugin, click the Change All button and then the Continue button in the subsequent confirmation dialog box.