Also, CVs are used in the U.S., primarily for physicians, academicians, and performers. These CVs are also often longer than traditional two or three page resumes, but not with the type of detail supplied in European CVs. Instead, CVs for doctors and professors in the U.S. will contain long lists of credentials, certifications, institutions, conferences, publications, and other pertinent accomplishments, with very little detail or explanation. Performers will, of course, provide lists of performances, venues, lead roles, and other credits. Actors, as opposed to most anyone else, can put their physical characteristics at the very top of their CV, as this is considered essential to their careers, and is not considered discriminatory.