Being up to date is everything in the law.  Nobody wants to cite a law to a court that was changed the previous year.  However, few hardbound legal materials are replaced on a yearly basis.  The solution is to use a ‘pocket part.’   This is a softbound supplement that attaches to a special pocket in the rear of the bound volume.  If the pocket part becomes too large, a code publisher will print a separate softbound volume that will be located on the shelf next to the hardbound volume.  If your hardbound volume of the code does not contain a pocket part, and the hardbound volume itself was not published within the last year, make sure to look for one of these softbound stand-alone update volumes.  (The U.S. Code is updated with annual hardbound update volumes only.)