Smooth originates from GLATT (by P. Gürtler).
Id1 selects the SCAN which is smoothed. If id2 is omitted,
the name of the new SCAN will be the name of id1 concatenated
with "_S".
/noconfirm
If SMOOTH works 'in place' (id1 = id2), it asks for confirmation
before is overrides the original data, unless /nocon is supplied.
/S=val1
The smoothing factor. Its default value is 1.
/NP=n_points
The number of points of id2 (3 - 8192, default: number of points
of id1).