It is simply a counter. $i is incremented by one for each name that is printed. the final value of $i is then returned to the calling script (recursion) ($EnumOUs = $i). This value is placed into $j of the calling function. $j which represents the total count of all recursions for a particular bracnch is then added to $i in the current loop. After all recursion is exhausted and the original function call exists to the script $i will return a count of all names seen.
