airbrush

or arfbrush: a simple agency, tool for sketching without a solid medium — in the air; used for temporary signage, visualizing movements in dance or flight, drawing and modelling (from flat and static to fully dimensional, with esnes for controlling color, density, speed). Airbrush emits a sculptable cloud of tiny, inert, colorable arf particles that use their aeroactive exhausts to cancel gravitation and wind drift — to stay put in the air (“aero lazyballs”); left to its own, the drawing will disperse, and the particles dissolve, within days — unless you recall the cloud back to its arf pen or make the airborne seeds sprout so they touch and stick together, solidifying the sketch.

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