1   MACROS    MACRO         {Defines SIC standard version macros}
2   RDBUFF    MACRO   &INDEV,&BUFADR,&RECLTH
              .
              .             {SIC standard version}
              .
3             MEND          {End of RDBUFF}
4   WRBUFF    MACRO   &OUTDEV, &BUFADR, &RECLTH
              .
              .             {SIC standard version}
              .
5             MEND          {End of WRBUFF}
              .
              .
              .
6             MEND          {End of MACROS}


               (a)

1   MACROX    MACRO         {Defines SIC/XE standard version macros}
2   RDBUFF    MACRO   &INDEV, &BUFADR, &RECLTH
              .
              .             {SIC/XE standard version}
              .
3             MEND          {End of RDBUFF}
4   WRBUFF    MACRO   &OUTDEV,&BUFADR,&RECLTH
              .
              .             {SIC/XE standard version}
              .
5             MEND          {End of WRBUFF}
              .
              .
              .
6             MEND          {End of MACROX}

   Figure 4.3 Example of the definition of macros within a macro body