Within Spatial Grasp Model and Technology (SGT) a high-level operational scenarios in recursive Spatial Grasp Language (SGL) starting in any world points effectively propagate, cover and match the distributed environment in parallel wavelike mode. Communicating SGL interpreters (up to thousands even billions copies if needed) integrated with advanced communication systems can altogether represent powerful spatial engines operating without central management and control often vulnerable in complex and unpredictable situations. The Chapter describes basics of SGT oriented from the very beginning on seeing, staying, moving, and operating in spaces of any complexity and coverage. This includes details of SGL, explanation of self-evolving recursive SGL scenarios, and implementation of the networked SGL interpreter.