E_iso                   Element isotopes
Iso_mass                Isotope labelled molecular mass
Iso_mz                  Isotope labelled molecular mass
adduct                  Common adducts
contam                  Contaminants in MS
describe                Get the compound information
doStat                  Performing statistics
getCV                   Calculate coefficient of variation (CV)
getFC                   calculate fold change
getMax                  Get the sample name which has the max ion
                        intensity
getP                    get p-values
mass                    molecular mass
mz                      Calculate accurate mass-to-charge ratio
ppm                     mass accuracy
searchDB                Search in customized database
what                    search for m/z in from the idiom metabolomics
                        database
