As different kinds of behaviour are added to VRML-based webspaces, a variety of styles, tools, interfaces, and languages are likely to be developed, enabling people to program objects to perform actions of considerable complexity. The WYSIWYG principle will lead to an increase of programming by example; and it will be noted that the requirements for describing and controlling such behaviours are very similar to those needed for real-time concurrent programming in general; this is one of the areas the visual language community is trying to address. One approach to dealing with the Tower-of-Babel effect is to offer a unifying framework within which the various efforts can be situated, enabling them to interface together; this paper offers some suggestions as to what such a framework might consist of.