retval = DoDTDomainA( o, win, req, rport, which, domain, attrs );
ULONG DoDTDomainA( Object *, struct Window *, struct Requester *,
struct RastPort *, ULONG, struct IBox *, struct TagItem * );
retval = DoDTDomain( o, win, req, rport, which, domain, tag1,
ULONG DoDTDomain( Object *, struct Window *, struct Requester *,
struct RastPort *, ULONG, struct IBox *, Tag, ... );