Subject:   -47- 1.2 libpr Directional pfLightPoints
Date: 8 Apr 1994 00:00:01 EST

  Specifying a pfLightPoint node as PFLP_UNIDIRECTIONAL or
  PFLP_BIDIRECTIONAL can cause a core dump in pfLightPoint::cull.
  Workaround: set the color of the first light point with
  pfLPointColor(lp, 0, color) before calling pfLPointShape.