A public health classification can be used to structure and design information and communications (e.g. in designing websites, structuring resources, and planning report chapters). It has practical applications in building information systems, such as a database of public health projects, using the classification to create explicit, structured information to make meaning (as well as documents) accessible and shareable. One test application proposed was for a public health equivalent of the Semantic Web Environmental Directory (SWED). 37 This could be created through web-based, universally available tools, that make it easy for public health people to describe what they do, using the classes and terms from the public health classification. Other uses are based on a broad vision of a public health classification as signposting or semantically indexing a wide range of resources (including but not limited to: thesauri, dictionaries, terminologies and definitions, scientific papers, reports and other documents, legislation, policies, information databases and indexes, case studies, stories and vignettes).