Here is the link to the video in case you aren’t sure what I’m talking about. I tried to find information on this in the HUB, but I came up short.
(Slide is at 9:08)
1. To load it, open Notepad++ and go to “Language, Define your language...”
2. In the “Define” window, click “Import.”
3. Navigate to the folder with the xml file and import it.
4. Restart Notepad++
5. Now you should see “ExtremeXOS” in the language menu.
Above URL would download the requested file.
Bill's method is the way to go for now, I think.