For researching court rules, treatises on practice and procedure may be useful for providing in-depth commentary and analysis. Many treatises are available on the practice and procedure of the federal courts. Treatises may be found in print by searching a law library's catalog, such as Marqcat for Marquette University Law Library's holdings, or may be found by searching fee-based databases such as Lexis and Westlaw. Access to these databases are restricted to members of the Marquette University Law School community.