tab_text (t, 2, 1, TAB_CENTER | TAT_TITLE, _("Pct"));
tab_text (t, 3, 0, TAB_CENTER | TAT_TITLE, _("Cum"));
tab_text (t, 3, 1, TAB_CENTER | TAT_TITLE, _("Pct"));
tab_text (t, 2, 1, TAB_CENTER | TAT_TITLE, _("Pct"));
tab_text (t, 3, 0, TAB_CENTER | TAT_TITLE, _("Cum"));
tab_text (t, 3, 1, TAB_CENTER | TAT_TITLE, _("Pct"));