+ -y: In addition to -d, which specifies an absolute date, the -y switch
+ specifies an offset, in days. For example, "-y 15" would increment the
+ "pretend date" 15 days from whatever was specified by the -d switch
+ (or now, if no -d switch was given).
+
+ -n: When used with "-d" and/or "-y", specifies that invoices should be dated
+ 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>)
+
+ -a: Only process customers with the specified agentnum
+
+ -s: re-charge setup fees
+
+ -v: enable debugging
+
+ -l: debugging level
+
+ -m: Experimental multi-process mode uses the job queue for multi-process and/or multi-machine billing.
+