PDS_VERSION_ID      = PDS3                                                    
RECORD_TYPE         = STREAM                   
OBJECT              = TEXT                                                    
  PUBLICATION_DATE    =  2008-05-15
  NOTE                = "Description of contents of DOCUMENT directory"       
END_OBJECT          = TEXT                                                    
END                                                                           
                                                                              
                                                                              
     The DOCUMENT directory contains the files that provide documentation and 
     supplementary information to assist in understanding and using the data 
     products on the volume.                   
                                                                              
     The files evolved as the mission progressed; users should refer to the   
files on the most recent (highest numbered) archive volume for the most       
up-to-date information.  Files on early volumes may be only 'place-holders.'  
                                                                              
Structure of the DOCUMENT directory:

DOCUMENT
   |
   |- DOCINFO.TXT                          The file you are reading.
   |
   |
   |-MEX_MRS_RIU_IS_3050.PDF/ASC         File naming convention for Higher 
   |                                       Science Products
   |-MEX_MRS_RIU_IS_3050_APP.ASC        File naming convention for Higher
   |                                       Science Products, Appendix,
   |                                     PDS Example labels
   |- M00SUMML03_OC1_040930000_05.TAB/LBL   Additional information about
   |                                        first occultation season
   | 
   |- M00SUMML03_OC2_043430000_05.TAB/LBL   Additional information about
   |                                        second occultation season
   |
   |- M00SUMML03_OC3_052000000_05.TAB/LBL   Additional information about
   |
   |                                        third occultation season
   |- M00SUMML03_OC7_071150000_05.TAB/LBL   Additional information about
   |                                        seventh occultation season
   |
   |- MARS_OPS_LOGBOOK_04.PDF               Operation logbook 2004
   |
   |- MARS_OPS_LOGBOOK_05.PDF               Operation logbook 2005
   |
   |- MARS_OPS_LOGBOOK_06.PDF               Operation logbook 2006
   |
   |- MARS_OPS_LOGBOOK_07.PDF               Operation logbook 2007
   |
   |- MEX_MRS_IGM_DS_3035.PDF             IFMS Doppler Processing Software   
   |                                      Documentation: Level 1a to Level 2.
   |- MEX_MRS_IGM_IS_3016.PDF             MaRS File Naming Convention.       
   |                                                                    
   |- MEX_MRS_IGM_IS_3016.ASC             MaRS File Naming Convention.       
   |                                                                    
   |- MEX_MRS_IGM-IS_3016_APP_A.ASC       MaRS File Naming Convention        
   |                                      Appendix A: Example PDS labels     
   |- MEX_MRS_IGM_MA_3008.PDF            MaRS User Manual.                                                                                       
The documents are either in PDF-Format or are text files in ASCII with 
variable length of characters per line. Each line is delimited with a 
carriage-return (ASCII 13) line-feed (ASCII 10) pair.