Help for MAPLABPROG

PURPOSE:
   Program to add MAP2 labels to image. MAPLABPROG does nothing else.

EXECUTION:
  MAPLABPROG  [input-file-spec] output-file-spec PARAMETERS

OPERATION:
MAPLABPROG uses the subroutine SEARCV2 to read the input file's labels.
The user's input PARAMETERS are then used to update the label
parameters. A new MAP2 label is added to the output image and the
image data is copied from the input file to the output file. If a
PARAMETER is defaulted, the value from the input file MAP2 label is
used for the new label. 

RESTRICTIONS:

 Only byte and halfword data are processed.

 If no input picture is specified, NL and NS or SIZE must be specified
 (and a file with all pixels of 0 DN is written).
EXAMPLE:
 MAPLABPROG IN OUT  RMAG=107593.9 SLAT=5.42 SLON=173.78 FOCL=1500. PSCAL=10.  SSCPT=(250.,250.) NORA=0. 'OS LAXIS=400. SAXIS=400.
  
 In this example a MAP2 label is added which indicates the image is 
in the object space projection (perspective) 

TIMING:
  MAPLAB takes as much time as is necessary to copy the input file.

HISTORY:
  Written By:  Joel Mosher 28-JUN-1986
  Cognizant Programmer: Jean Lorre
  Revisions
    25-JUN-1987 new parameter processing
    11 May 92  GMY  Link to SPICE (for PBDATA).