HELENA LSR-MSM-MSA
By default, net intensity is calculated using the LSR (or BPB) technique
(L = left background, R = right background, S = Peak ).
Alternatives are MSM (Where M = Min(L,R) and MSA where min(L,R) is
used for the background calculation and max(L,R) is added to the Peak.
PLATON HOMEPAGE
17-Dec-1999 A.L.Spek