VMS Help DCE_RPC, API Runtime Intro, Frequently Used Routine Parameters, name_syntax  *Conan The Librarian (sorry for the slow response - running on an old VAX)

   Used as an input parameter, an integer value that specifies the
   syntax of an entry name.  When allowed by the called routine, a
   value of rpc_c_ns_syntax_default specifies that the routine uses
   the syntax specified in the RPC_DEFAULT_ENTRY_SYNTAX environment
   variable.  The following table lists the valid syntaxes that
   applications can use in DCE RPC for entries in the name service
   database.

                            Valid Name Syntaxes
              ________________________________________________
              Constant                  Value   Description
              ________________________________________________
              rpc_c_ns_syntax_default     0     Default syntax
              rpc_c_ns_syntax_dce         3     DCE

   The name_syntax parameter tells routines how to parse the entry
   name specified in an input name parameter or specifies the syntax
   to use when returning an entry name as an output name parameter.

   If the RPC_DEFAULT_ENTRY_SYNTAX environment variable is not
   defined, the RPC runtime uses the rpc_c_ns_syntax_dce name syntax.