The tools for extraction are built in order to provide a very accurate control on every step. No extrapolation of base line is necessary.
Provision is made to carefully evaluate uncertainties.
A small XafsSum item is used to sum raw spectra, with special care to possible dispersion in energy. The Modl item is used for simulation and modeling. Reference data may be either extracted from experiment, or read from FEFF files. McKale tables are also available. Besides the classical gradient minimization algorithm, decorrelation of phases and amplitudes is implemented.