LAS\STITCH [/RESAMPLE NX Xref Xval Xinc Unit]
Without this option, the X axis of the output sum will be automatically
computed as the composition of all the input frequency axes. The output
spectrum has the coarsest resolution of the input spectra. Those are
then internally resampled and added on this new axis.
A custom output X axis can be given with the option /RESAMPLE NX Xref
Xval Xinc Unit. The input spectra are internally resampled and added on
this axis. See HELP RESAMPLE for possible uses and caveats.