/**
* Changes the visiblity of a series.
*
- * @param {Number} num the series index
- * @param {Boolean} value true or false, identifying the visibility.
+ * @param {number} num the series index
+ * @param {boolean} value true or false, identifying the visibility.
*/
Dygraph.prototype.setVisibility = function(num, value) {
var x = this.visibility();