1. A system for providing reference items as a suggestion for classifying uncoded electronically stored information items, comprising: a set of reference electronically stored information items each associated with a classification code; a clustering module to combine one or more of the reference electronically stored information items with a set of uncoded electronically stored information items and to generate clusters of the uncoded electronically stored information items and the one or more reference electronically stored information items; and a display to visually depict relationships between the uncoded electronically stored information items and the one or more reference electronically stored information items in at least one cluster as suggestions for classifying the uncoded electronically stored information items in that cluster.