[Pulled out from: #15 (closed)]

A tool to create, edit, browse and copy references, and write them out to an index file. The tool will generate a unique ID for each reference entry, and then the only attribute the [ref] node actually takes will be that ID (rather than site, page, url, author, etc. that it can currently take). hmml_to_html.c / hmml_to_youtube.c will then look up into this index to grab the necessary information associated with the given ID.