typedef struct {
Xgl_pt_typept_type;/∗ type of point ∗/
Xgl_bbox∗bbox;/∗ optional box containing
     all points ∗/
Xgl_usgn32num_pts;/∗ number of points ∗/
Xgl_usgn32num_data_values;/∗ number of data values at
     each point ∗/
Xgl_pt_ptr_unionpts;/∗ union of pointers to array
     of points ∗/
} Xgl_pt_list;

SunOS