procmail efficiency?

I'm using:

    :0:
    * ^sender:.*someone
    someone

in my ~/.procmailrc and procmail seems to search the whole message,
and not just the header. Is this right?

        Thanks,

        John

-- 

John Conover, 631 Lamont Ct., Campbell, CA., 95008, USA.
VOX 408.370.2688, FAX 408.379.9602, whois '!JC154'
conover(_at_)inow(_dot_)com, http://www2.inow.com/~conover/john.html