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 one of a plurality of classification codes and a visual representation of that classification code comprising at least one of a shape and a symbol, wherein the visual representation of each of the classification codes is different from the visual representations of the remaining classification codes; a set of uncoded electronically stored information items each associated with a visual representation different from the visual representations of the classification codes; a processor to execute modules, comprising: a clustering module to combine one or more of the coded reference electronically stored information items with the set of the uncoded electronically stored information items and to group the combined uncoded electronically stored information items and one or more coded reference electronically stored information items into clusters; and a display to visually depict relationships between the uncoded electronically stored information items and the one or more coded reference electronically stored information items in at least one of the clusters as suggestions for classifying the uncoded electronically stored information items in that cluster by displaying the visual representation associated with each of the coded reference electronically stored information items in that cluster and the visual representation associated with each of the uncoded electronically stored information items in that cluster.