e/IBM History Flow tool

Information
has gloss	eng: IBM's History Flow tool is a visualization tool for a time-sequence of snapshots of a document in various stages of its creation. The tool supports tracking contributions to the article by different users, and can identify which parts of a document have remained unchanged over the course of many full-document revisions. The tool was developed by Fernanda Viégas of the MIT Media Lab and Martin Wattenberg and Kushal Dave of IBM.
lexicalization	eng: IBM History Flow tool
instance of	e/Wiki