-=item check_freq - "1d" for the traditional, daily events (the default), or "1m" for the new monthly events (part_event.check_freq)
+=item quiet
+
+set true to surpress email card/ACH decline notices.
+
+=item check_freq
+
+"1d" for the traditional, daily events (the default), or "1m" for the new monthly events (part_event.check_freq)
+
+=item payby
+
+allows for one time override of normal customer billing method
+
+=item debug
+
+Debugging level. Default is 0 (no debugging), or can be set to 1 (passed-in options), 2 (traces progress), 3 (more information), or 4 (include full search queries)