rem: gerbv_draw_prim7(pixmap, gc, s, scale, x, y);
add: gerbv_draw_prim6(pixmap, gc, s, scale, x, y);
context: gerbv_draw_prim7(GdkPixmap *pixmap, GdkGC *gc, stack_t *s, int scale,		 gint x, gint y){    const int outside_dia_idx = 2;    const int inside_dia_idx = 3;    const int ch_thickness_idx = 4;    const int rotation_idx = 5;    double new_stack[] =     {s->stack[0],                      /* X */     s->stack[1],                      /* Y */     s->stack[outside_dia_idx],        /* Outside Diameter */     (s->stack[outside_dia_idx] -       s->stack[inside_dia_idx]) / 2.0, /* Circle Line Thickness */     0.0,                              /* Gap Between Circles */     1.0,                              /* Number of Circles */     s->stack[ch_thickness_idx],       /* Cross Hair Thickness */     s->stack[outside_dia_idx],        /* Cross Hair Length */     s->stack[rotation_idx]};          /* Rotation */    double *old_stack;    old_stack = s->stack;    s->stack = new_stack;    gerbv_draw_prim7(pixmap, gc, s, scale, x, y);    s->stack = old_stack;    return;} /* gerbv_draw_prim7 */