This parameter determines the number of points for calculation and plot of spectra. 
Higher values yield better resolution around sharp features, especially, when using no or little line broadening. When considering ordered samples or motion in the intermediate case an increase in this value, however, can increase computation time coniderably. So one has to balance between a true spectrum around sharp features and a reasonable computing time. <p>

A certain hint for a good value for the number of data points can be get from the output listing below the calculated spectrum. Here a line gives the number of points per line. This value should not be less than 1.