Defined in file omssa.asn C++ class: CMSIon MSIon ::= SEQUENCE { neutralloss MSIonNeutralLoss OPTIONAL, -- is this peak a neutral loss? isotope MSIonIsotopicType OPTIONAL, -- isotopic composition of peak internal VisibleString OPTIONAL, -- if iontype is internal, this is the internal sequence immonium MSImmonium OPTIONAL -- if iontype is immonium, show characteristics }