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<p>See <a class="el" href="classipc_1_1session_1_1shm_1_1classic_1_1Session__mv.html" title="Implements the SHM-related API common to shm::classic::Server_session and shm::classic::Client_sessio...">shm::classic::Session_mv</a> counterpart for public description. </p>
<p >Internally: Short-hand for handle to <code>classic</code> single-SHM-pool arena; which we acquire in create-only mode (must not yet exist