The Design Info tool is a foundational element of the ExactCAD system.  It creates a file in each design database which stores all the metadata associated with that design.  It includes part numbers, drawing numbers, revisions, descriptions, and project and charge numbers.  It establishes variants within the design database and keeps them synchronized with external data sources and downstream tools.  It keeps track of all the primary stakeholders on the design team.

Any of the ExactCAD tools which use the design metatdata in any way refer to the Design Info data for that information.