A projector lens of a vehicular headlamp has a shape of a convex lens in which the upper and lower portions are cut by a predetermined amount. In one exemplary embodiment, for instance, a circuit description indicative of the layout of signal wires and ground wires in the circuit is received. Facilitating monitoring or analysis of large multivariable data sets provided in records and displayed in tabular form it is proposed to define blocks of fields having equivalent field values and display only one field value of a block.