A computer-implemented system and method for placing groups of document clusters into a display is provided. One or more spines of document clusters are placed into a display and at least one of the document clusters for each placed spine is designated as an anchor cluster. At least one of the unplaced spines is compared with each of the placed spines in the display and one of the placed spines most similar to the unplaced spine is identified. The document clusters of the unplaced spine are compared with the anchor cluster of the most similar placed spine and the cluster on the unplaced spine that is most similar to the anchor cluster on the most similar placed spine is identified. The most similar cluster of the unplaced spine is grafted to the anchor cluster of the most similar placed spine.