.LIBRARY "MY_MACROS" 1
        .LIBRARY "PROJ_MACROS" "PROJ:[MACRO],PROJ:[DEVELOPMENT]" 2

      1  The first statement adds the macro library MY_MACROS.MLB
         to the macro library list. The assembler first looks for
         MY_MACROS.MLB in the current directory. If not found there,
         the assembler next looks in the directory or directories
         indicated by the MACRO64$LIBRARY logical name if it is
         defined. If not found there or if MACRO64$LIBRARY is not
         defined, the assembler next looks in the directory or
         directories indicated by the ALPHA$LIBRARY logical name
         if it is defined. If not found there or if ALPHA$LIBRARY is
         not defined, the assembler next looks in the directory or
         directories indicated by the SYS$LIBRARY logical name. If
         not found there, the assembler issues a diagnostic message.

      2  The second statement adds the macro library PROJ_MACROS.MLB
         to the macro library list. The assembler first looks for
         PROJ_MACROS.MLB in the PROJ:[MACRO] directory. If not found
         there, the assembler next looks in the PROJ:[DEVELOPMENT]
         directory. If not found there, the assembler issues a
         diagnostic message.