This is valid, but will do nothing since no operation is specified.
This will process all the profiles in foo.dbs.
This will process all the profiles in foo.dbs and print the full name of each generated file to stdout.
This will process all the profiles in foo.dbs and output a lot of messages to stderr.
This will list all the SQL columns returned from each query. The /vp will insure that the profile is printed so that you can tell which is which.
This will list all symbols returned from the profile "goo".