 [ FILE SECTION.
   ~~~~ ~~~~~~~
   { File/Sort-Description [ { FILE-SECTION-Data-Item } ]... }... ]
   {                         { 01-Level-Constant      }      }
   {                         { 78-Level-Constant      }      }
   { 01-Level-Constant                                       }
   { 78-Level-Constant                                       }
