How to write directive to skip directory but keep one of its subdirectory?

I am going to apply a directive to more than 300 Unix/Linux machines. I would 
like to skip the whole "/usr" directory but only keep "/usr/local".

Can I write directive like this?

<< "/usr" >>
+skip: .?* *
<< "/usr/local" >>
forget

Please advise.
Also, what's the difference between "skip: .?* *" and "skip: *.*"?

Thank you!

+----------------------------------------------------------------------
|This was sent by beeth2006 AT yahoo DOT com via Backup Central.
|Forward SPAM to abuse AT backupcentral DOT com.
+----------------------------------------------------------------------

To sign off this list, send email to listserv AT listserv.temple DOT edu and 
type "signoff networker" in the body of the email. Please write to 
networker-request AT listserv.temple DOT edu if you have any problems with this 
list. You can access the archives at 
http://listserv.temple.edu/archives/networker.html or
via RSS at http://listserv.temple.edu/cgi-bin/wa?RSS&L=NETWORKER