14. A server for delta-handling comprising: a network connection for receiving a request from a client; a memory storing a page-document that comprises multiple page-components and is displayed by a client; each page-component being a component of the page-document and having a corresponding writer-function, the writer-functions for the multiple page-components collectively comprising multiple writer-functions, each writer-function being a function of a class that corresponds to the corresponding page-component, each writer-function being operable to write static browser-component parts to a static output stream and updated browser-components to a distinct delta output stream; and a processor translating the page-document into a browser-document stored in the memory, the processor processing the request resulting in an update of a specific page-component of the page-document with an application-delta, wherein the specific page-component has a writer-function, the writer-function having two output streams, a static output stream and a delta output stream, the processor generating a browser-delta in the memory by applying the writer-function to the application-delta and sending the browser-delta as part of the delta output stream to the client for updating the browser-document on the client.
14. A server for delta-handling comprising: a network connection for receiving a request from a client; a memory storing a page-document that comprises multiple page-components and is displayed by a client; each page-component being a component of the page-document and having a corresponding writer-function, the writer-functions for the multiple page-components collectively comprising multiple writer-functions, each writer-function being a function of a class that corresponds to the corresponding page-component, each writer-function being operable to write static browser-component parts to a static output stream and updated browser-components to a distinct delta output stream; and a processor translating the page-document into a browser-document stored in the memory, the processor processing the request resulting in an update of a specific page-component of the page-document with an application-delta, wherein the specific page-component has a writer-function, the writer-function having two output streams, a static output stream and a delta output stream, the processor generating a browser-delta in the memory by applying the writer-function to the application-delta and sending the browser-delta as part of the delta output stream to the client for updating the browser-document on the client. 15. The server of claim 14 , wherein the writer-function is a function of a class that is written in an object-oriented programming language.