Usage: %P [options]... arg...
 -a[:aflag]        Audit to %P.lg
 -A path[:aflag]   Audit to path, or path%/%P.lg if path is a directory
                     aflag is a|b|d|da|db|p|pa|pb|t|ta|tb|u|ua|ub
                       a=append, b=backup, d=datestamp,
                       p=process-id, t=timestamp, u=username
 -h | -?           Display help text
 -O dir            Output to dir%/<arg-base-name>.ms
 -q                Quiet operation

Environment variables:
 ICROOT        Messages and help         ICMAKEMS       Command line options

arg must be one of syserrs.h, coberrs.h, or runerrs.h and the output
will be one of syserrs.ms, coberrs.ms, or runerrs.ms, respectively.

The .ms files are not required for the system to operate using English
messages, which are built into the system.  They exist to provide
alternative (presumably non-English) message text.

All of the icobol executables will look in ICROOT%/messages for the
existence of syserrs.ms for base system messages.

The compiler and IDE will look for syserrs.ms and also coberrs.ms.

The various icrun executables will look for syserrs.ms and also runerrs.ms.

