Implemented as a descendant of VRML 2.0/X3D Inline node class. This way VRML 1.0 actually gets a couple of VRML 2.0/X3D extensions. The VRML 2.0/X3D field "url" is renamed here to VRML 1.0 field "name". (Note that this means that WWWInline.name is actually MFString, not just SFString like VRML 1.0 spec says.)