1. A method to respond to a request for a function of a real-world object connected to a control system which function is represented as an Aspect of an Aspect Object, the method comprising: receiving a web request in a web server, which web request is sent by a web presentation means and said web request comprises a Uniform Resource Locator (URL), which URL comprises means to identify the Aspect Object and the Aspect of the Aspect Object, identifying in a software application the Aspect Object and the Aspect by use of information in the URL, querying the identified Aspect Object from the software application for an interface to an Aspect System Object associated with the Aspect, receiving from the Aspect System Object to the software application a reference to an interface of the Aspect System Object, which implements the function of the identified Aspect, invoking functionality of the Aspect by means of the reference, sending a response message to the world wide web presentation means, which response message is adapted to contextual information which describes characteristics of the world wide web presentation means, wherein the world wide web presentation means is updated with the result of the performed function of the real-world object.