Called for each window, write this configure list (the defaults) to the <defs/> section.
Every window class shall have predefined styles, in order to allow external style definitions. It might as well being possible to define a style directly associated with a window in the same way it is done inside the option database. Requires cascading styles.
Might generate a cascading style sheet in the future.
Needed for canvas stroke:black, It will be necessary to predefine some elements for certain classes (hard coded).
Usage disabled! Litters the generated SVG with various style/css definitions. Does currently not generate anything useful.