PDS_VERSION_ID       = PDS3                                                   
RECORD_TYPE          = STREAM                                                 
OBJECT               = TEXT                                                   
  NOTE               = "SOFTINFO file for GEM Archive Volume"                 
PUBLICATION_DATE   = 1995-12-31                                               
END_OBJECT                                                                    
END                                                                           
                                                                              
***** File SOFTINFO.TXT                                                       
                                                                              
     This information file describes the SOFTWARE directory, which contains   
documentation and source code which should be of use to the GEM Archive user. 
The SOFTWARE directory is divided into subdirectories according to documents  
(DOC) and code (SRC); in the former case, explanation files for a set of code 
(as ASCII text files) are included and the latter is outlined below.          
                                                                              
     The SRC subdirectory contains software from PDS-SBN to read the PDS      
image and table objects; there are a few image files on this disk with most   
data being binary or ASCII tables and a sepcial case of .TXT files. All the   
procedures (*.pro) are provided, but were only tested on IDL version 3.6.1 for
SunOS and are not expected to work properly on other operating systems.       
                                                                              
     The SRC subdirectory contains Fortran code to read the GEM POSITION file 
and calculate the space vectors (giocall) or light travel time (travcall).    
                                                                              
     The SRC subdirectory also contains software to translate PDS label       
information to the FITS format. A list of reserved FITS keywords(*.lst), along
with source code(*.c) and header(*.h) files, and makefile(*.mak) are included.