ExpiresByType mod_expires

> I was poking some headers trying to get my friends blog to run smidgin faster and came across alternative syntax for expires by time. I've always done it like this until now ExpiresByType image/gif A7776000 didn't realise you could do like this ExpiresByType image/x-icon "access plus 9 month" its all here at http://httpd.apache.org/docs/2.0/en/mod/mod_expires.html