set_right_margin_parm
#if defined(set_left_margin_parm) && defined(set_right_margin_parm)
&& VALID_STRING(set_right_margin_parm)) {
need_flush |= sent_string(TIPARM_1(set_right_margin_parm,
#ifdef set_right_margin_parm
&& !VALID_STRING(set_right_margin_parm))