***** File DOCERRS.TXT                                                        
                                                                              
     This file contains a brief listing of errors in the documentation which  
was deposited on Volumes 19-22 (the first four of the five "mixed discs").    
With the exception of the file INDXERRS.TXT, the other errata files in this   
directory are specific to individual IHW Disciplines and pertain to FITS      
header and data files; INDXERRS.TXT contains mention of errors in various     
indices on Volumes 19-22.                                                     
                                                                              
1.)  On Volumes 19-22 (HAL_0019--HAL_0022), some of the IHW Discipline        
Appendices (in the /DOCUMENT/APPENDIX directory) have invisible "tab"         
characters embedded in their tables.  These may cause "display problems" for  
the editor packages associated with some workstations and operating systems.  
This has, in fact, been noticed at the NASA/Goddard Space Flight Center, where
the IHW CD-ROMs are being produced. As far as we are aware, there is no actual
content error, just the occasional display irregularity when using an editor. 
Typing a file to the screen produces a normal display.                        
                                                                              
2.)  On Volume 19, the AAREADME.TXT file is the version which was deposited on
Volume 22, with the data date range appropriate to the latter disc.  The date 
range appropriate to Volume 19 is 1981 December 2 -- 1985 December 8, and is  
given in the document VOLSET.TXT, as well as on the "spine" of the insert     
"backliner" and the disc label of Volume 19.  The AAREADME.TXT file for Volume
22 is inappropriate for Volume 19 for another reason:  to reduce the size of  
Volume 22, the /INDEX/NETABLES directory present on the other "mixed discs"   
was emptied on Volume 22, and mention of this was made in the AAREADME.TXT    
file.  Volume 19, however, contains a full /INDEX/NETABLES directory.         
                                                                              
3.)  On Volume 19, there is an empty directory one level below the root,      
called UTILS; it should not be present.  In the EPHEM directory there are two 
extra files called DOCUINFO.TXT AND NETINFO.PD8; neither should be there.     
                                                                              
4.)  On Volume 20 (HAL_0020), the ATLSINFO.TXT file (in the /DOCUMENT/INTRODOC
and /DOCUMENT/APPENDIX/SOL_ATLS directories) was not padded to include        
carriage return/line feed (<CR><LF>) at the end of every line.  This feature  
will likely cause a "display problem" when the file is loaded into an editor. 
                                                                              
5.)  On Volume 21 (HAL_0021), three files had occasional line truncations due 
to the presence of characters in column 79 in the pre-padded text files.  The 
files are:  ACKNWLDG.TXT (root and /DOCUMENT directories), PREFACE.TXT        
(/DOCUMENT/APPENDIX directory), and VOLINFO.TXT (/DOCUMENT directory).  The   
files are otherwise error-free.  The reader should, however, consult the      
same documents on Volumes 19-20 & 22-23 to avoid this (truncation) problem.   
