typedef struct {
Xgl_usgn32num_arcs;/∗ number of arcs ∗/
Xgl_multiarc_typetype;/∗ data type of multiarc ∗/
Xgl_bbox∗bbox;/∗ optional box containing all arcs ∗/
union {/∗ union of pointers to arcs ∗/
Xgl_arc_i2d∗i2d;
Xgl_arc_f2d∗f2d;
Xgl_arc_d2d∗d2d;
Xgl_arc_f3d∗f3d;
Xgl_arc_af3d∗af3d;
Xgl_arc_d3d∗d3d;
Xgl_arc_ad3d∗ad3d;
} arcs;
} Xgl_arc_list;

SunOS