1  WWIDs
   To SANCP, the term "WWID", unless otherwise qualified, refers to
   the system's view of the set of all paths to a single port on a
   SAN storage device without regard to which drivers provide the
   paths. When a WWID is modified with the SET command, all paths
   are affected

   More generally, WWIDs are World-Wide unique Identifiers which are
   assigned to a FibreChannel port by its device's manufacturer. Each
   port will have a Node WWID and a Port WWID - since the Node WWID 
   can be used to group Port WWIDs on the same device, only the Port
   WWID is guaranteed to be unique within a Fabric

2  WWID_Formats
   A WWID passed to SANCP can be in any of the formats in which WWIDs
   are commonly displayed, so the output of any of the following
   commands can be easily cut & pasted into a SANCP command line:

   SDA> FC SHOW STDT 

      WWID format 50001FE1000180b1

   SDA> FC SHOW WTID

      WWID format 5000.1FE1.0001.80A0

   $ SHOW DEVICE $1$DGA3420 /MULTI

      WWID format PGC0.5000-1FE1-0011-B15C

   The port specification in the SHOW DEVICE format will be ignored

2  WWID_Wildcards
   A WWID term is a sequence of hex digits delimited by a period, a
   dash or the beginning or end of the string

   "%" can be  used any number of times, up to the legal length of a
   term, to wildcard a single hex digit

   "*" can  be used once within a term to wildcard 0 to N hex digits,
   but sequences of "*" will be collapsed to a single use and count as 1

   Legal wildcard uses:

      50*1000180b1
      *.*FE1.%%01.80A%
      PGC0.5%%0-1*1-0011-B15*

   Illegal wildcard uses:

      50*001*080b1         - too many multi-char wildcards
      5000.%%%%%.0001.80A0 - too many single-char wildcards