tab_text (t, 0, 0, TAB_NONE, _("Variable"));
tab_text (t, 1, 0, TAB_LEFT, _("Value"));
tab_text (t, 2, 0, TAB_LEFT, _("Label"));
tab_text (t, 0, 0, TAB_NONE, _("Variable"));
tab_text (t, 1, 0, TAB_LEFT, _("Value"));
tab_text (t, 2, 0, TAB_LEFT, _("Label"));