Clarifies scope of affordable housing obligations.

This bill clarifies definitions and credit rules for New Jersey's affordable housing law. It defines key terms like "low income housing" (30% of median income) and "moderate income housing" (50-80% of median income), and specifies how municipalities can credit existing affordable units toward their housing obligations. The bill also clarifies that municipalities cannot count units built during "gap periods" (when needs weren't previously tracked) for credit calculations. These changes directly affect New Jersey municipalities required to meet housing quotas under the 1985 law.