Doc Gen
Program-Transformation.Org: The Program Transformation Wiki
DocGen is a DocumentationGeneration tool aimed at redocumenting mainframe-based (COBOL, DB2, JCL, ...) systems.
It is offered by the SoftwareImprovementGroup, and based on earlier research done by CWI described in BuildingDocumentationGenerators.
See http://www.software-improvers.com/docgen.html
--ArieVanDeursen
