6 element title { text },
7 element version { text },
8 element author { text }+,
9 element about { text },
10 element icon { text }?
15 attribute name { text },
19 element width { text },
20 element height { text },
23 element net { empty }?
30 element name { text },
31 element default { text },
37 element graphics { text },
38 element audio { text },
39 element input { text },
40 element script { text },
42 element extra { text }*
49 element name { text } &
50 element plugin { text }? &
51 element filename { text }
56 element name { text },
57 element filename { text }
61 element actor { text }*,
62 element level { text }*