PEN is a division of the Indiana Department of Correction. Indiana's prison industries manufacture goods and provide services using offender labor. PEN is an acronym for Prison Enterprises Network. PEN sells office and lounge seating, park and patio furniture and equipment, a full line of cleaning products, laundry services, printing, offender clothing, and detention furniture. PEN provides Commissary services for all offenders in the Indiana Department of Correction. Offenders also work in a number of joint ventures with private industry.