An information processing apparatus and method adapted to automatically convert contents edited by a user into a description language that is independent of platforms. Personal computers execute authoring software, convert the contents edited by the user into a markup language document, and transmit it to a server via the Internet. The server stores the markup language document supplied from the personal computer into a HDD and executes a markup language processing processor to develop the markup language document into a markup language document tree structure, which is stored in the HDD.