the non-boilerplate text from that page:
Currently the following items in ODF 1.2 are generic and allow any value:
- Compatiblity options
- form:control-implementation (e.g. "ooo:com.sun.star.form.component.TextField")
- Graphics formats. E.g. “Star-View-Metafiles” are not documented at all.
While this is important for innovation we should encourage implementers to standardize on certain values.