Library /sys$common/syshlp/dbg$uihelp.hlb DEBUGUI, conn_dialog_stop  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Click Stop to cause the debug server associated with the currently
  active session to be shut down.

  Note:  Once a server has been shut down, clients can no longer connect
  to it.  To restart a server, type DEBUG/SERVER at the command prompt on
  the OpenVMS system.