Overrides the default entry point symbol, using instead the symbol identified by
epsym, which must already have been defined in a COBOL module. By default, the entry point address for a linked module is the basename
of the first file input to the
cob command. If you are linking to a system executable (-x
cob flag) and want the entry point address to be read from the command line at run-time, you can define the value of
epsym as null, that is -e "".