Hiding area from a map (i.e. Corsica on Italian map)

Sometimes you might need to completely hide a map area out from a view. One good example would be Corsica on an Italian map. No, we didn't miss geography class back in school. The French island was included on the map because this very distinctive area of the Mediterranean would look awkward with Sardinia but without Corsica.

Back to original topic, any area can be completely hidden by setting it's alpha property to zero and mouseEnabled to false:

"areas": [{
  // hide Corsica
  "id": "FR-H",
  "alpha": 0,
  "mouseEnabled": false
}]