The Allen and Greenough is still under construction;
so some links may not work quite the way you would expect.
304. A Relative Pronoun indicates a relation between
its own clause and some substantive. This substantive is called the
Antecedent of the relative.
Thus, in the Sentence -
- eum nihil
délectábat quod fás esset (Mil. 43),
nothing pleased him which was right,
the relative quod connects its
antecedent nihil with the predicate
fas esset, indicating a relation
between the two.