/sys$common/syshlp/helplib.hlb SET, DISPLAY, Qualifiers, /TRANSPORT  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /TRANSPORT=transport-name

    Defines the mechanism, for example, DECnet or local, that passes
    information between the application and the workstation. The
    transport mechanism is used to send input from the user to
    the application and output from the application to the display
    device. The transport-name can be one of the following values:

    o  TCPIP or DECNET

       Specifies the appropriate network transport for applications
       running and displaying on different nodes. You can specify
       the default transport value used with the SET DISPLAY/CREATE
       command by defining the DECW$SETDISPLAY_DEFAULT_TRANSPORT
       logical in either the job, process, or system table. The
       value of this logical is then used each time you enter the
       SET DISPLAY/CREATE command without the /TRANSPORT qualifier.
       If you specify neither the qualifier nor the logical, the
       value of DECNET is used as default.

    o  LOCAL

       Optimizes the performance of applications running and
       displaying on the same node.