paraphrase:

All that can be done is to set out some of the principles which ought to be applicable to such cases. As elsewhere in the law of property, the distinction between movables and immovables dominates the law. Three further aspects should be kept clearly distinct, however.

The only action that can be taken is to establish some of the principles that should apply in these situations. Like in other property law areas, the distinction between movable and immovable property is important. However, three additional aspects should be clearly separated.