Level 2 Help for COMPTAB

INP specifies the input data sets.  Up to 48 are allowed.

The SIZE parameter may be used when only a sub-region of each image is to
be concatenated; it has the format SIZE=(SL,SS,NL,NS), where the parameters
are starting line, starting sample, number of lines, and number of samples,
respectively.  SIZE=(1,1,10,10), for example, will cause comptab to only look
at the first ten samples of each of the first ten lines in each image, when
performing the concatenation. The default (1,1,0,0) means use the whole image.

INTEGER - Starting line (see SIZE)

INTEGER - Starting sample (see SIZE)

INTEGER - Number of lines (see SIZE)

INTEGER - Number of samples (see SIZE)