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Cornerstone™ software is a family of Microsoft® Windows™ based process instrument maintenance management tools. These products are designed, developed, and marketed by Applied System Technologies, Inc. ("ASTEC") located in Dunnellon, Florida, U.S.A. Cornerstone software products provide essential configuration, calibration, monitoring, and maintenance history functions for conventional analog (4-20 mA) and HART protocol compatible smart process instruments and field devices. These products deliver powerful tools to meet the need for standardized instrument maintenance procedures and record keeping mandated by ISO 9000 quality standards and regulations administered by OSHA, FDA, and others. "The Open Platform for Instrument Management" supports, in a single database, a wide variety of instruments, calibration equipment, and instrument interface devices, from many different manufacturers. Cornerstone Configurator, Base Station, and Field Station are oriented toward specific support for HART smart instruments. Cornerstone Cal Station provides comprehensive calibration management for both conventional and smart instruments. Cornerstone products significantly reduce the drudgery and labor expense of present instrument configuration, testing, calibration, and maintenance routines. At the same time they provide clearly demonstrable processes for adherence to regulatory requirements and quality standards.