Compound preposition

A preposition, only more tedious, and therefore more beloved of our old friend the mediocre attorney.

We know that our legal brethren delight in perverting the ordinary use of words - nominalising verbs into nouns, and so on, and the compound preposition is a neat way of co-opting nouns, conjunctions — all kinds — into the servile business of putting one noun in relation to another.

Why, for example, exercise your rights “under” a contract when you can do so “in accordance with” or “pursuant to” it?