Abstract
The following quote was obtained by the news editors from the background informa tion supplied by theinventors: “A robotic work tool is an autonomous robot appa ratus that is used to perform certain tasks,for example for cutting lawn grass. A robotic work tool may be assigned an area, hereinafter referred to asa worki ng area, in which the robotic work tool is intended to operate. This working are a may be definedby the perimeter enclosing the working area. This perimeter may include the borders, or boundaries, whichthe robotic work tool is not intended to cross.
NETL
NSTL