When annotating chess games, commentators frequently use widely recognized annotation symbols. Amoretti lost no time in transcribing, editing, and annotating the manuscript. Media Streams "s a system for annotating, retrieving, repurposing, and automatically assembling digital video". A number of essays have been written analyzing and annotating this song. It provides a mechanism for annotating graphs, entities, and relations with metadata. SGML provides apparatus for linking to and annotating external non-SGML entities. In 2010 the core developers added a whiteboard for annotating the uploaded presentation. Stevens soon began compiling and annotating reissues and compilations of American records, particularly for EMI. DBpedia Spotlight is a tool for annotating mentions of DBpedia resources in text. The freeware Foxit Reader, available for Microsoft Windows, macOS and Linux, allows annotating documents. Obelism is the practice of annotating manuscripts with marks set in the margins. Tim Shortis observes that ROFL is a means of "annotating text with stage directions". Most effort is spent in annotating the route and transmitting the geometry over the network. Teachers use only Zhuyin ("bopomofo") for teaching and annotating the pronunciation of Mandarin. Rfam is designed to be similar to the Pfam database for annotating protein families.