***** File HAL_0006.TXT                                                       
                                                                              
     For each CD-ROM, the documentation and index files contain statistics    
about the images.  Some of these text files contain erroneous information.  A 
summary review of the disk also revealed some inconsistences and other        
mistakes.   This file lists the mistakes and gives corrections.               
                                                                              
     In the VOLUME.TXT file, the date range for the compressed comet images   
is incorrectly stated; the period covered is Mar 07, 1986 to Mar 11, 1986.    
                                                                              
     The file EPHEM.HDR does not correctly describe the EPHEM.IDX file; a     
blank was deleted from the third column (HOURS) and inserted in the fourth    
(JULIAN DAY).  The FITS header should contain the corrected format keyword    
- TFORM04 = 'F2.1    '- for the HOURS column description.                     
                                                                              
     The IMAGUIDE.TXT file was mistakenly copied from a master set of         
documentation that describes a selected set of images during Halley Armada    
Week (Mar 6-14, 1986).   The first paragraph should be omitted or simply      
use a correct copy duplicated on the other volumes.                           
                                                                              
   In PDSINFO.TXT there is a PDS description for "dataless headers".          
This type of file is listed in the NETLARGE.IDX table but does not occur      
on these discs and should be deleted from this file.