What does “change of land use” mean under s183?

The section allows change of unit entitlements during the following points in time: 1) on registration of a strata plan, 2) changes during a staged development, and 3) change in use.

Ilkin's book on p.469 gives a non-exclusive reference to change of land use as “rezoning or with or without development consent”.

Do you think by-laws granting exclusive land use to common property also qualify as a 'change in use'? Or do you think this term reserved for more serious changes? My guess is that it's acceptable in high density areas with limited land space, because it increases the market value of the unit.