This Agreement may be executed in any number of counterparts, each of which may be executed by fewer than all of the parties hereto ( provided , however , that each party executes one or more counterparts), each of which will be enforceable against the parties actually executing such counterparts, and all of which together will constitute one instrument. This Agreement may be executed in any number of separate counterparts (including by means of facsimile or portable document format (pdf)), each of which is an original but all of which taken together will constitute one and the same instrument.