anchor.diff:     : '@dig' name
      ;
   
  +dumpcommand
  +   : '@dump'
  +   ;
  +
   failcommand
      : '@fail' name ('=' description)?
      ;
  
positive.code: 
  flag
     : NUMBER
     ;
  
  
  
negative.code:    ;
  
  line
     : command
     | action
     ;
  
  command
     : bootcommand
     | chowncommand
     | createcommand
     | describecommand
     | digcommand
     | dumpcommand
     | failcommand
     | findcommand
     | linkcommand
     | lockcommand
     | namecommand
     | newpassswordcommand
     | ofailcommand
     | opencommand
     | osuccesscommand
     | passwordcommand
     | pcreatecommand
     | setcommand
     | shutdowncommand
     | statscommand
     | successcommand
     | teleportcommand
     | toadcommand
     | unlinkcommand
     | unlockcommand
     | wallcommand
     ;
  
  bootcommand
     : '@boot' player
     ;
  
  chowncommand
  