The PC-based point-of-sale (POS) market in North America experienced an 8% shipment increase in 2006, says IHL Consulting Group. Replacements by retail giants like Kroger and Wal-Mart generated the majority of shipments for the Grocery, Supercenter and Mass Merchant segments. Windows XP Embedded shipments grew by 242%, and shipments of WEPOS (Windows Embedded for Point of Service) grew by 80%. Pep Boys, Burlington Coat Factory and Circuit City helped to grow the Linux installed base by 44% in 2006.