摘要: For many researchers studying human activity, the diverse media and technologies used for recording, viewing analysis place heavy demands on analysts who want to stay "close" their primary data. At same time, analyses themselves can require very different representational media, posing difficulties wanting juxtapose compare multiple perspectives work. The tool described here is intended address some of these issues by providing an extensible computer environment in which chronologically organized representations a single sequence activity be edited, juxtaposed, aligned.