In the Dictionary of Military and Associated Terms of the U.S. Dept. of Defense need-to-know is a criterion used in security procedures. It requires the custodians of classified information to establish, prior to disclosure, that the intended recipient indeed must have access to the information in order to perform his or her official duties.
Streaming: An act or instance of flowing; relating to or being the transfer of data (as audio or video material) in a continuous stream specifically for immediate processing or playback; first known usage 1980; online video streaming such as Megaupload, Pirate Bay; audio streaming such as Grooveshark, Pandora and Sogza.
The American parties to an agreement are in constant communication with each other, streaming relevant information as they receive it. There is no need to front-load the agreement with the details.
One of the most critical success factors in the U.S. business is speed. Parties to an agreement are more interested in getting started on carrying out an agreement than in defining and discussing its details.