mig.cbl is a cobol example on how to write a generic enough read and write program
in order to migrate files from Vision to c-tree.

compile with: ccbl32 mig.cbl 

run:
wrun32 mig FILEIN FILEOUT

or 
wrun32 mig FILELIST (in this case set the environment variable MIGRATE_FILELIST=1) 

Environment variables:

MIGRATE_FILELIST   set to 1 to indicate a file list
MIGRATE_SYSOUT     set to 1 to deactivate stdout 
MIGRATE_PROGRESS   set to 0 to deactivate progress indicator
