- $this->out->submit('submit', _('Unsubscribe'), 'submit', null, _('Unsubscribe from this user'));
+ // TRANS: Button text on unsubscribe form.
+ $this->out->submit('submit', _m('BUTTON','Unsubscribe'), 'submit', null,
+ // TRANS: Button title on unsubscribe form.
+ _('Unsubscribe from this user'));