The rules are:
First rule, each poem must contain within the convolutions of its sentences, an allusion to the practice of beekeeping. The allusion is to be both contrived and unexpected. The intention is to delight and surprise the reader.
Second rule, a reference to a classic or contemporary work of art, must be hidden among the leaves.
Third rule, social facts obtrude.
These are among the rules used to construct Roman Exercises.