nce data and the document display UI's data.
     It also opens the document file, though it ignores the file's 
     contents. */
  TVState *theBuffer;
  optr    someObject;
  char	  sumString[LOCAL_DISTANCE_BUFFER_SIZE];

  /* Lock down the passed block */
  theBuffer = MemLock( stateBlock );  

  /* Update the document display UI and the data we cache in the 
     dialog's instance data. */
  /* We re-use the "someObject" variable to refer to each of the 
     document display UI objects in turn. */
  so