The WISP software migration toolkit is an integrated set of utilities and libraries that allow applications that were originally written for Wang VS computers to be migrated to run on Unix or Windows operating systems. The WISP product is a complete migration toolkit that handles all aspects of the migration process. It includes: source data transfer utilities, a Wang VS COBOL source code translation utility, a library of Wang VS compatible subroutines (VSSUBS), routines for emulation of the Wang VS environment, a VS procedure language interpreter and converter, and a complete solution to handle terminal operation and screen management. WISP can operate in two modes; as a pre-processor where the Wang VS COBOL is maintained or as a translator where the Wang VS COBOL is translated once into ACUCOBOL-GT or Micro Focus Cobol and these source file are then maintained.