FIT\ITERATE [N] [/NOCHECK BASELINE]
ITERATE tries the GRADIENT technique to improve the last results of the
profile fit. Optional argument N indicates the number of iterations. Do
not expect spectacular results if the absolute minimum is far away! Typ-
ically, this command should be used if the previous fit did not con-
verge, but seems close enough. If you are using the GAUSS method, be
cautious not to change the X unit in the mean time.