This page summarizes all the element types currently supported by the proof-of-concept interpreter. The explanations are somewhat cursory so it is probably better to look at the examples to work out what is going on.
There is one block for each element type. All element names are in fixed width bold. Attribute names are in normal fixed width. Each block shows the attributes supported by an element and then the types of children allowed.
Models can be spread over multiple files. The root element in each file is