generated, if @code{(gcc-self . "string")} is present, this string will
be inserted literally as a @code{gcc} header. This parameter takes
precedence over any default @code{Gcc} rules as described later
-(@pxref{Archived Messages}).
+(@pxref{Archived Messages}), with the exception for messages to resend.
@strong{Caveat}: Adding @code{(gcc-self . t)} to the parameter list of
@code{nntp} groups (or the like) isn't valid. An @code{nntp} server
non-@code{nil}, the behavior is the same as @code{all}, but it may be
changed in the future.
+@item gnus-gcc-self-resent-messages
+@vindex gnus-gcc-self-resent-messages
+Like the @code{gcc-self} group parameter, applied only for unmodified
+messages that @code{gnus-summary-resend-message} (@pxref{Summary Mail
+Commands}) resends. Non-@code{nil} value of this variable takes
+precedence over any existing @code{Gcc} header.
+
+If this is @code{none}, no @code{Gcc} copy will be made. If this is
+@code{t}, messages resent will be @code{Gcc} copied to the current
+group. If this is a string, it specifies a group to which resent
+messages will be @code{Gcc} copied. If this is @code{nil}, @code{Gcc}
+will be done according to existing @code{Gcc} header(s), if any. If
+this is @code{no-gcc-self}, that is the default, resent messages will be
+@code{Gcc} copied to groups that existing @code{Gcc} header specifies,
+except for the current group.
+
@end table