Accessory muscles are isointense to skeletal muscle on all pulse sequences and typically attach by muscular or tendinous insertions. Accessory muscles around the knee include the 3 rd head of the gastrocnemius, the accessory plantaris, the accessory popliteus, and the tensor fasciae suralis muscle.
Napster was founded by Shawn Fanning, John Fanning, and Sean Parker. Initially, Napster was envisioned as an independent peer-to-peer file sharing service by Shawn Fanning. The service operated between June 1999 and July 2001.
Macster was later bought by Napster and designated the official Mac Napster client (Napster for the Mac), at which point the Macster name was discontinued. Even before the acquisition of Macster, the Macintosh community had a variety of independently-developed Napster clients.