For OPTCD=RELEASE, VTAM® sends an UNBIND request on each session for which BIND has been sent and rejects any outstanding CINIT requests that have been received. If this causes the SLU's session count to drop below its session limit, VTAM automatically turns the oldest queued session for the SLU, if any, into a pending active session. If there are no queued sessions or if the LU is independent, and if the SLU has a controlling application program (established with VARY LOGON or the LOGAPPL operand on the LU definition statement), which is not the application program issuing CLSDST, a session is initiated between the controlling application program and the SLU.