What file extension should be used

[EdemAttiogbe]

Apologies if this is a silly question, but I've seen random mentions of *.wsd or *.puml as the file extension to use when saving PlantUML source. *.wsd works, but is there any official documentation, either for this plugin or PlantUML, that lists which file extension to use?

[qjebbs]

"extensions": [
          ".wsd",
          ".pu",
          ".puml",
          ".plantuml",
          ".iuml"
        ]

Choose any one above you like.