Library /sys$common/syshlp/sysmanhelp.hlb IO, SHOW, EXCLUDE, Example  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  SYSMAN> IO SHOW EXCLUDE
  %SYSMAN-I-
 IOEXCLUDE, the current permanent exclusion list is: DKC500,DKD*

      This example shows the permanent exclusion list used in the
      autoconfiguration of devices; the current list contains DKC500
      and all DKD devices.