Arguments

device-name

   Specifies a physical device name or a logical name equated to
   a physical device name. Specify the device name as a character
   string expression.

   After the device-name argument is evaluated, the F$MULTIPATH
   function examines the first character of the name. If the
   first character is an underscore (_), the name is considered a
   physical device name; otherwise, a single level of logical name
   translation is performed and the equivalence name, if any, is
   used.


item

   Specifies the type of device information to be returned. The
   item argument must be specified as a character string expression.
   Currently, the only valid item is MP_PATHNAME, which returns a
   string with the path name for the specified multipath-capable
   device.


context-symbol

   Prior to the first use of F$MULTIPATH with MP_PATHNAME, the
   context symbol must be initialized to a value of 0. The
   F$MULTIPATH function is responsible for maintaining the value
   of the context symbol.

                                CAUTION

      Do not modify the context symbol value after it has been
      initialized to 0; doing so could result in unpredictable
      behavior of F$MULTIPATH.