dwg_class_is_entity (const Dwg_Class *restrict klass)
{
  return (klass != NULL && (int)klass->item_class_id == 0x1f2) ? 1 : 0;
}
dwg_class_is_entity (const Dwg_Class *restrict klass)
{
  return (klass != NULL && (int)klass->item_class_id == 0x1f2) ? 1 : 0;
}