Cord Locking System is an extra $50.00 (to be collected before shipping). It works like a venetian blind. Each Roman has cords, and although you would be using the cord locking system to lock the roman in place you will still have the contend with the cords, which the excess will be wrapped around a cleat (furnished). If you do not want cords visible on your romans, you might want to consider the NO CORDS SYSTEM.
NOTE: This system is NOT Necessary for your Roman, It is just personal preference.