In {TAIL ~ the broadcast mode}, {HEAD ~ the gateway server} periodically or continuously images broadcast data , compresses the website images, and stores the compressed website images in the gateway cache 
In
In { TAIL ~ the broadcast mode } , { HEAD ~ the gateway server } periodically or continuously images broadcast data , compresses the website images , and stores the compressed website images in the gateway cache
REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH