Import of svg symbols

Import of svg symbols

Hi, I am looking for some advice on working with SVG files in Zenon. Can I directly import existing SVG files as symbols, or do I need to convert them to XML first? 
So far I redrew them, but it would be better to import those svg symbols directly. I just cannot find out how.

I am using Zenon 12 Energy Edition 64 Bit.

Thanks and best regards
Max