/*                                                                            
/* This is a sample PDS label file, with running commentary.                  
/*                                                                            
/* Syntax remarks:                                                            
/*   o  Comments begin with '/*' and run until the end of the line            
/*   o  It is not required that the '=' align;  that was done for             
/*        readability                                                         
/*   o  There can be only one assignment statement on a line, but a           
/*        single assignment statement can run over more than one line         
/*   o  The entire label is written in ODL (Object Definition Language)       
/*        which is case-insensitive (except within double-quoted strings).    
/*        Note, however, that PDS requires labels and catalog files to be     
/*        all in upper-case, except for description fields within double      
/*        quotes.                                                             
/*                                                                            
/*                                                                            
/* This file has also been padded out to 80-byte fixed-length records with    
/* carriage-return + linefeed record delimiters                               
/*                                                                            
                                                                              
/*                                                                            
/*  First, the standards identifiers.  The required PDS_VERSION_ID indicates  
/*  which version of the PDS standards was used to create the label and data  
/*  files.                                                                    
/*                                                                            
                                                                              
PDS_VERSION_ID          = PDS3                                                
                                                                              
/*                                                                            
/*  Next come the file characteristics.                                       
/*                                                                            
RECORD_TYPE             = FIXED_LENGTH                                        
RECORD_BYTES            = 150                                                 
FILE_RECORDS            = 80                                                  
                                                                              
/*                                                                            
/*  Now the pointer to the actual data, which is not contained in this        
/*  file.  It is also possible to point into the middle of a data file        
/*  This is useful when there is some other attached header on the data       
/*  which is not to be incorporated into the official PDS file set (an        
/*  attached FITS header, for example).                                       
/*                                                                            
/*  In this case there is only one pointer because only one data structure    
/*  is being described.  Sometimes one label will point to several objects    
/*  and contain an equal number of OBJECT definitions.  There might. for      
/*  example, be both an image and a flat field in the same data file.         
/*                                                                            
                                                                              
^IMAGE                  = "HMC01805.IMG"                                      
                                                                              
/*                                                                            
/*  Identification fields.  The first is the DATA_SET_ID which is used to     
/*  tie together various files from the same mission.  The format for the     
/*  DATA_SET_ID value is described in the "PDS Standard Reference",           
/*  Chapter 6.                                                                
/*                                                                            
                                                                              
DATA_SET_ID             = "GIO-C-HMC-3-RDR-HALLEY-V1.0"                       
OBSERVATION_ID          = "033495"                                            
TARGET_NAME             = "HALLEY"                                            
START_TIME              = 1986-03-14T00:02:02.958Z                            
DATA_SET_PARAMETER_NAME = DATA_NUMBER   /* This indicates which type of       
                                        /* data comprise the image; in        
                                        /* this case, a count.                
                                                                              
/*                                                                            
/*  Observation parameters germane to this file only.  This label lists       
/*  both the START_TIME (the time observation began for the night) and        
/*  the OBSERVATION_TIME (the time corresponding to the beginning of          
/*  the data actually included in the file).  These are the same for this     
/*  file.                                                                     
/*                                                                            
                                                                              
OBSERVATION_TIME        = 1986-03-14T00:02:02.958Z                            
                                                                              
/*                                                                            
/*  Finally, the data structure definition.  This is a very simple image,     
/*  so the data structure is correspondingly simple.  It would also have      
/*  been possible to greatly expand the number of descriptive keywords        
/*  included in this label.                                                   
/*                                                                            
                                                                              
OBJECT                  = IMAGE                                               
 LINES                  = 80                                                  
 LINE_SAMPLES           = 75                                                  
 SAMPLE_TYPE            = MSB_INTEGER  /* MSB = most significant byte first   
 SAMPLE_BITS            = 16                                                  
 NOTE                   = "HMC IMAGE"                                         
 OFFSET                 = 0.000000E+00                                        
 SCALING_FACTOR         = 1.000000E+00                                        
                                                                              
 /* These keywords indicate that the (0,0) byte should map to the upper       
 /* left-hand corner of the display:                                          
                                                                              
 LINE_DISPLAY_DIRECTION   = "DOWN"                                            
 SAMPLE_DISPLAY_DIRECTION = "RIGHT"                                           
                                                                              
 /* And this keyword indicates that rows are stored contiguously (i.e.,       
 /* byte (0,0) is followed by (0,1), then (0,2), etc.):                       
                                                                              
 AXIS_ORDER_TYPE = "LAST_INDEX_FASTEST"                                       
                                                                              
 /* In the case of FITS images, which are stored in column-major order -      
 /* (0,0) is followed by (1,0), (2,0), etc. - the AXIS_ORDER_TYPE would       
 /* be "FIRST_INDEX_FASTEST".                                                 
                                                                              
END_OBJECT              = IMAGE                                               
END