Filter on position inside bounding box ("m.pos within bbox(37.905, -122.431, 37.918, -122.414)") (AISAB-89).
Filter on ( 'm.year' | 'm.month' | 'm.dom' | 'm.dow'  | 'm.hour'  | 'm.minute' ) compareTo (INT|string) (AISAB-96).
Filter on 'm.year' | 'm.month' | 'm.dom' | 'm.dow'  | 'm.hour'  | 'm.minute' in lists and ranges (AISAB-96).