Parameters

 Keyword  Posn  Type       Description
 -------  ----  ----       -----------
 NUMBER    1    INTEGER    Number of input datafiles (1 to 20).
 INP1      2    UNIV       Name of 1st input datafile
 INP2      3    UNIV       Name of 2nd input datafile
 INP3      -    UNIV       Name of 3rd input datafile
 INP4      -    UNIV       Name of 4th input datafile
   .
   .
   .
 INP20     -    UNIV       Name of 20th input datafile
 XOFFSET   -    INTEGER    The number of pixels between the left
                           hand edge of the current datafile and
                           that of the first file input.
 YOFFSET   -    INTEGER    The number of pixels between the bottom
                           edge of the current datafile and
                           that of the first file input.
 OUT       -    UNIV       Name of the output file.
 AVERAGE   -    LOGICAL    Average the pixels where two or more
                           pixels from the input data combine to
    Hidden default = YES   make one output pixel ? If NO then the
                           input pixels are just added. By default
                           averaging takes place.
 OTITLE    -    CHAR       Title of output image structure.
    Hidden default = Mosaic