If a box is specified, only the values within the box are printed.
Note if the data file (or box) has a large number of columns the output will be very wide and look funny.
The default width of the field in which to print each data value is 5 unless
changed by the width=
option.
If val is specified the row and columns of all the points
with the specified value are printed out.
SEE ALSO
rowcol.