Create a group for the given »window«. »window« is used as the identifier for the newly created node.
Use the class as a style definition. Done inside the properties section for this »window«.
Example 8.3. ::dumper::instantiate using addWindow
... # are allowed again, they cannot affect their surroundings # since all is enclosed by a viewport. # Side-effect: Creates a <defs/> node as the first child! svgdom::addWindow $window {} $outer