37. A process for making a digital information product comprising computer data signals defining a digital form of a digital document, wherein the process makes available digital documents of different types and content, and is responsive to a request for one of the documents, the request received from another computer according to a communication protocol, the process comprising the steps of: receiving an indication of a requested document; accessing a definition of additional content for a type of the requested document; generating an additional content component according to the definition of additional content for the type of the requested document; selecting at least a portion of the content of the requested document; combining the additional content component with the content of the selected portion of the requested document to obtain an output document, and encoding the output document in a computer data signal; and packaging and transmitting the output document to the other computer according to the communication protocol.
37. A process for making a digital information product comprising computer data signals defining a digital form of a digital document, wherein the process makes available digital documents of different types and content, and is responsive to a request for one of the documents, the request received from another computer according to a communication protocol, the process comprising the steps of: receiving an indication of a requested document; accessing a definition of additional content for a type of the requested document; generating an additional content component according to the definition of additional content for the type of the requested document; selecting at least a portion of the content of the requested document; combining the additional content component with the content of the selected portion of the requested document to obtain an output document, and encoding the output document in a computer data signal; and packaging and transmitting the output document to the other computer according to the communication protocol. 38. The process of claim 37, wherein the requested document is a digital document having fixed text content and fixed structure defined by descriptive markup defining a plurality of hierarchical elements providing an indication of structure of the digital document.