Abstract: Techniques are described relating to the identification of location of content within an electronic document. Techniques may include generating a location identification rule specifying one or more parameters for identifying a location identifier (LID) for each of the one or more streams associated with the content of the electronic document. Further, the LID may be generated in accordance with the location identification rule. The LID may be assigned to at least a portion of the content, such that the portion of the content within the electronic document may be located in accordance with the LID.

Abstract: A pan and tilt drive system for an electrically powered device includes a housing in which an elongated shaft is rotatably supported, which shaft is rotatably driven about a shaft axis by a pan motor. A receptacle is coupled to the shaft and disposed to pivot about a tilt axis which tilt axis is perpendicular to the shaft axis. A tilt subsystem is provided to facilitate tilt motion of the receptacle about the tilt axis. The tilt subsystem includes a tilt motor, a tilt coupling and a tilt rod. The tilt coupling is coupled between the tilt motor and the tilt rod, while the tilt rod is coupled between the tilt coupling and the receptacle. Actuation of the tilt motor effects linear translation of the tilt coupling in a direction parallel to the shaft axis, thereby causing the tilt rod to tilt the receptacle about the tilt axis.