{HEAD ~ means} for sending the purchased software along with the embedded information in {TAIL ~ portions} to the user computer over the network so that the user computer can reassemble a modified version of the purchased software and the embedded information 
{ HEAD ~ means } for sending the purchased software along with the embedded information in { TAIL ~ portions } to the user computer over the network so that the user computer can reassemble a modified version of the purchased software and the embedded information
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