The demo shows a web-based collaboration environment with provenance — information about how computed artifacts were generated from source material. Provenance as map: We created the build graph as a quick way to see which files are out of date, but we’ve also found it surprisingly useful as a “map” for navigating a project’s contents. FileWeaver: Flexible File Management with Automatic Dependency Tracking by Julien Gori, Han Han, and Michel Beaudouin-Lafon, shows a dependency graph view of build tasks over a Unix filesystem: