1. A method for delta-handling on a server storing a page-document that comprises at least one component, the page-document being translated into a browser-document that is displayed by a client; the method comprising the following steps: receiving a request from the client resulting in an update of a specific component of the page-document with an application-delta, wherein the specific component has a writer-function; generating a browser-delta by applying the writer-function to the application-delta; and sending the browser-delta to the client for updating the browser-document on the client.