TBL_SPAN_DHORIZ
sp->pos = TBL_SPAN_DHORIZ;
case TBL_SPAN_DHORIZ:
sp->pos == TBL_SPAN_DHORIZ ? "double" :
case TBL_SPAN_DHORIZ:
rhori = sp->pos == TBL_SPAN_DHORIZ ||
lhori = sp->pos == TBL_SPAN_DHORIZ ||
sp->pos == TBL_SPAN_DHORIZ ? 2 : 1;
case TBL_SPAN_DHORIZ: