[Orgmode] Archiving according to the CLOSED timestamp

[Samuel Wales]

Is there a command that will archive all headlines that were
CLOSED more than a certain number of days ago?

I read the manual and every customizable variable, and
looked at archiving and expiry.

Thanks.

-- 
Professional myalgic encephalomyelitis denialists are knowingly
causing further suffering and death by opposing biomedical research on
this fast-spreading serious disease.  Do you care about the world?
http://www.meactionuk.org.uk/What_Is_ME_What_Is_CFS.htm