rpart.lists             Creates lists of variable values (factor
                        levels) associated with each rule in an 'rpart'
                        object.
rpart.rules             Returns a list of strings summarizing the
                        branch path to each node.
rpart.rules.push        Writes rule tables required to process rpart
                        rules in SQL to an open RODBC connection.
rpart.rules.table       Returns an unpivoted table of branch paths
                        (subrules) associated with each node.
rpart.subrules.table    Returns an unpivoted table of variable values
                        (factor levels) associated with each branch.
