characterizeReactions   Characterize stoichiometric reactions by
                        compartments and reaction type
checkBalance            Evaluate the mass or charge balance for a set
                        of stoichiometric reactions
compartments            Extract the compartments associated to
                        metabolites of a set of stoichiometric
                        reactions.
downloadChEBI           Download the ChEBI database
metabolites             Identify the list of metabolites for a set of
                        stoichiometric reactions
orphanMetabolites       Identify the orphan metabolites of a set of
                        stoichiometric reactions
products                Identify the products of a stoichometric
                        reaction
reactants               Identify the reactants of a stoichometric
                        reaction
stoichiometricMatrix    Build the stoichiometric matrix for a set of
                        stoichiometric reactions
validateSyntax          Evaluate if a stoichiometric reaction has a
                        valid syntax
writeSBMLmod            Write a model in SBML format
writeTSVmod             Write a model in TSV format for the 'sybil' R
                        package
