/LIBRARY[=library-spec]
       /LIBRARY=primary-library (D)

    Specifies an SCA library containing the module to be deleted. This
    library must be one of the current libraries (established by a SET
    LIBRARY command).

    If you do not specify a library, the primary SCA library is the
    default; that is, the module is deleted from the first of the
    current SCA libraries.