Hi all! How can a user of libcss distinguish between these two situations: a) property was defined using a default value in CSS and b) property was undefined in CSS for the node. Those are different because in a latter case the value of that property should be taken from a node attribute (in my case of svg styling). As far as I can tell, for a root node, the property is always initialised using the default value, so when composing a style I can't distinguish between a and b. Thanks, Paul