The 'tbig.dat' INSTRM=6 data file is then displayed automatically
in the main WinPLOTR Windows. Extrema values can be modified in
the 'Plot / Zoom' menu option and the number of graduations in
the 'Option / Graduations' menu option.
Clicking on the
'Points selection / Automatic peak seach' menu option
will open a dialog box to define some parameters needed
by the automatic peak search procedure.