each / callback
// Execute a callback for every element in the matched set.
// (You can seed the arguments with an array of args, but this is
// only used internally.)
each: function( callback, args ) {
// <summary>
// Execute a function within the context of every matched element.
// This means that every time the passed-in function is executed
// (which is once for every element matched) the 'this' keyword
// points to the specific element.
// Additionally, the function, when executed, is passed a single
// argument representing the position of the element in the matched
// set.
// Part of Core
// </summary>
// <returns type="jQuery" />
// <param name="callback" type="Function">
// A function to execute
// </param>
return jQuery.each( this, callback, args );
},