[ESRI software] Acronym for Production Line Tool Set. A software package that allows users to prepare and maintain data for maps, perform quality assurance/quality control tasks, and create map sheets. Its base product, PLTS Foundation, is composed of three parts: Foundation Tools, GIS Data ReViewer, and Map Production System and MPS-Atlas. The tools can be used with different product specifications, and are available as solutions that have been created for nautical, defense, aeronautical, and mapping agencies.