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