| http://www.w3.org/ns/prov#value | - Also shown in FIG. 1, and schematically depicted in FIG. 2, is a position defining system, which, in the embodiment depicted, comprises a position or location signal generator 60 which generates a signal which defines the location earth moving machine on the tract or relative to a point bearing a known or ascertainable locational relationship to the tract.
|
