WorldServer - where can we find information about how to configure Idiom Legacy filters like the XML (NT) Filter

While we know that Idiom/Legacy filters are no longer supported, we are still using them in some cases. Where can we find some documentation about how to use and configure them?

As explained in this article, Idiom/Legacy filters have not been removed from recent WorldServer versions, but they have been marked as Deprecated and are no longer supported. Any issues coming from using these filters cannot be addressed anymore. A documentation about how to configure Legacy filters is no longer present online and in our RWS Documentation Center, but you can find some information in the attached WorldServer v10.0.0 Admin Guide.pdf. This is a User Guide for a very old version of WorldServer. It contains a detailed description of how to configure Legacy filters such as - for example - the XML (NT) Filter on page 153 to 169.