VMS Help RTL Routines, LIB$, LIB$GET_LUN  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The Get Logical Unit Number routine allocates one logical unit
    number from a processwide pool. If a unit is available, its
    number is returned to the caller. Otherwise, an error is returned
    as the function value.

    Format

      LIB$GET_LUN  logical-unit-number

  Additional Information (explode) :

• Returns
• Argument