geocat.ch, being based on GeoNetwork, an opensours solution that is enhanced steadily, is continuousely profiting from these developpements. Updats are carried out on a fast rhythm. That is why it is difficult to keep up adapting the documentation. The basic functions are described in the GeoNetwork manual. Tospecific questions on geocat.ch you may find answers in the FAQs. For further questions, please contact us directly. 

It is possible to directly access a desired metadata set with a parameterised URL using the following parameters (example of the National Maps 1:25'000):

Now you only have to replace the UUID.