$EREF$plot2 module <peak>

This module allows the addition of a set of peaks, one
peak for each extracted plane.  Each set has a name.  A
search for an extremum in the specified region is done.
$<DL>$
$<DT>${peak name}$<DD>$
The name for the set of peaks determine by the specified
region.

$<DT>${x region}$<DD>$
The lower and upper limits of the first plane dimension.
The first number must be less than the second number.

$<DT>${y region}$<DD>$
The lower and upper limits of the second plane dimension.
The first number must be less than the second number.

$<DT>${points : ppm : Hz}$<DD>$
The x and y regions may be defined in points, ppm or Hz.

$<DT>${add}$<DD>$
Add the set of peaks defined by the specified region.

$<DT>${cancel}$<DD>$
Quit the module without adding any peaks.

$<DT>${help}$<DD>$
Display this message.
$</DL>$
