This document discusses planning regions and establishes criteria for delineating different levels of planning regions. It defines macro, meso, and micro-regions based on geographical scope and scale of development programs. Macro-regions should contain all essential resources for integrated development and have economic self-sufficiency within the region. Meso-regions are subdivisions of macro-regions and are delineated based on criteria like economic viability and resource potential. Micro-regions are intended for formulation of local development plans and represent communities with shared interests, values, and production types.