The document discusses using spatial modeling in ArcGIS with the Spatial Analyst extension to prioritize land based on various thematic input layers related to planning issues. Key steps involve using weighted overlay analysis on raster-based thematic input layers assigned percentage weights that add to 100%, to produce a single output map ranking land priority from very high to very low. The process requires a capable computer, ArcGIS with the Spatial Analyst extension, selecting and weighting relevant thematic raster layers of common measurement scale and accuracy to model priorities and inform planning.