Interfaces to the library

• Every user with an HTTP of FTP space should be able to publish a document ===> no intelligence on the server side

• Every user with a standard browser should be able to browse the library ===> no intelligence on the client side

• Presentation sites: active sites that permit to browse with a standard browser documents that resides on other servers. The documents are downloaded, the transformations are applied and the result is returned to the user's browser (e.g. "http://cartoonia.cs.unibo.it/helm/coq")