- $this->out->submit('submit', _('Subscribe'), 'submit', null, _m('Subscribe to this search'));
+ $this->out->submit('submit',
+ // TRANS: Button text for subscribing to a search.
+ _m('BUTTON','Subscribe'),
+ 'submit',
+ null,
+ // TRANS: Button title for subscribing to a search.
+ _m('Subscribe to this search.'));