The invention relates to the use of an anionic polymer in a liquid washing or cleaning agent for inhibiting graying when washing andor cleaning textile web materials, and acrylic acid homopolymers comprising liquid washing and cleaning agents. The software system includes a task-specific name space which corresponds to a task executing in the software system. 5 molar %;b) 8-15% of an elastomeric copolymer of ethylene and propylene, the copolymer having an amount of recurring units deriving from ethylene ranging from 25 to 50 wt % and being partially soluble in xylene at ambient temperature; the polymer fraction soluble in xylene at ambient temperature having an intrinsic viscosity value ranging from 2. First and second reception units calculate arrival angles and reception levels of reflected waves calculated from respective reception signals which are obtained by receiving the reflected waves by the first and second beam patterns. Boundary carriers may, but need not be, identified and excluded from consideration for use by a wireless terminal.