-option suppresses the listing of hidden recipients.
-If the printing of both kinds of recipients, visible and hidden,
-is requested and hidden recipients are present,
-they are separated by a line similar to ``\0==BCC==''.
+option suppresses the listing of hidden BCC recipients.
+If the printing of multiple kinds of recipients
+is requested and hidden ones are present,
+they are separated by a line similar to ``\0==DCC=='' or ``\0==BCC==''.