+(defconst gnus-extra-topic-parameters
+ '((subscribe (regexp :tag "Subscribe") "\
+If `gnus-subscribe-newsgroup-method' is set to
+`gnus-subscribe-topics', new groups that matches this regexp will
+automatically be subscribed to this topic"))
+ "Alist of topic parameters that are not also group parameters.
+
+Each entry has the form (NAME TYPE DOC), where NAME is the parameter
+itself (a symbol), TYPE is the parameters type (a sexp widget), and
+DOC is a documentation string for the parameter.")
+
+(defconst gnus-extra-group-parameters nil
+ "Alist of group parameters that are not also topic parameters.
+
+Each entry has the form (NAME TYPE DOC), where NAME is the parameter
+itself (a symbol), TYPE is the parameters type (a sexp widget), and
+DOC is a documentation string for the parameter.")