In an exemplary embodiment this list contains both sell side and buy side firms and is limited to actual users of the subject system; however, in {HEAD ~ other embodiments} this list may be limited to {TAIL ~ only sell side firms}, or only buy side firms 
limited to
In an exemplary embodiment this list contains both sell side and buy side firms and is limited to actual users of the subject system ; however , in { HEAD ~ other embodiments } this list may be limited to { TAIL ~ only sell side firms } , or only buy side firms
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