Annotation Graphs are a formal framework for representing linguistic annotations of time series data. Annotation graphs abstract away from file formats, coding schemes and user interfaces, providing a logical layer for annotation systems. What's New [2011-01-01] All of our AGTK applications have been renamed to have the "AGTK" prefix: e.g., AGTK TableTrans, AGTK MultiTrans, AGTK InterTrans, and AG