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

    The Free Logical Unit Number routine releases a logical unit
    number allocated by LIB$GET_LUN to the pool of available numbers.
    LIB$FREE_LUN is the complement of LIB$GET_LUN.

    Format

      LIB$FREE_LUN  logical-unit-number

  Additional Information (explode) :

• Returns
• Argument