spamassassin and gnus

[Hadron Quark <hadronquark@gmail.com>]

I have spamc talking to spamd and procmail then moving spam to special
spam folders depending on the newly added spamassassin headers.

How to mark mail as not spam though?

e.g I get soemthing like:

===================
Spam detection software, running on the system "local", has
identified this incoming email as possible spam.  The original message
has been attached to this so you can view it (if it isn't spam) or label
similar future email.  If you have any questions, see
the administrator of that system for details.

Content preview:  smtp test -- test [...] 

Content analysis details:   (5.5 points, 5.0 required)

 pts rule name              description
---- ---------------------- --------------------------------------------------
 0.0 UNPARSEABLE_RELAY      Informational: message has unparseable relay lines
 2.0 RCVD_IN_SORBS_DUL      RBL: SORBS: sent directly from dynamic IP address
                            [80.171.194.85 listed in dnsbl.sorbs.net]
 1.8 RCVD_IN_DSBL           RBL: Received via a relay in list.dsbl.org
                            [<http://dsbl.org/listing?80.171.194.85>]
 1.7 RCVD_IN_NJABL_DUL      RBL: NJABL: dialup sender did non-local SMTP
                            [80.171.194.85 listed in combined.njabl.org]
=============================================

I seem unable to find documentation on how to alter this and mark mails
as spam and not spam inside the gnus interface.