1. A method for creating a rights expression for association with an item for use in a system for controlling use of the item in accordance with the rights expression, said method comprising: specifying rights expression information indicating a manner of use of an item, said rights expression information including at least one element, said element having a variable and corresponding value for said variable; generating a profile of said rights expression information, including removing said value for said variable from said element; and generating an identification for said profile, whereby said rights expression information can be enforced on a device based on said variable and said identification for said profile.