This parameter determines the overall type of scrunching to use when scrunching extracted orders.
Set TRUE if the current frame wavelength range is to be used (all orders) to generate a full range wavelength scale to scrunch into; i.e., all orders are scrunched into the same bin size, but the number of X-axis bins in each order will vary.
Set FALSE if each order is to be scrunched to its own scale. This retains the X-dimension of the orders, but each order will be scrunched into a slightly different bin size.
Martin Clayton