with today's date, irregardless of the pretend date used to pre-generate
the invoices.
- -p: Only process customers with the specified payby (I<CARD>, I<DCRD>, I<CHEK>, I<DCHK>, I<BILL>, I<COMP>, I<LECB>)
+ -p: Only process customers with the specified payby (CARD, DCRD, CHEK, DCHK, BILL, COMP, LECB)
-a: Only process customers with the specified agentnum. Multiple agentnums can be specified, separated with commas.