in apidocs/ui/lang/translator.js [20:30]
translate: function(sel) {
var $this = this;
sel = sel || '[data-sw-translate]';
$(sel).each(function() {
$(this).html($this._tryTranslate($(this).html()));
$(this).val($this._tryTranslate($(this).val()));
$(this).attr('title', $this._tryTranslate($(this).attr('title')));
});
},