The structuring of data is a relatively minor part of defining an architecture. Structured data is an easy thing to do but understanding the organization of the system in an abstract way is complicated. A comment was made that this is the first step in getting two LTSC standards to have a common denominator. If there are deficiencies in the approach we need to identify them but it is an important first step. Jack commented that all the features of the cmi standard have been divided into 4 levels.
Levels define different levels of functionality within the Semantic layer.
A comment was made that the cut-off between levels is somewhat arbitrary. We might want to consider this in terms of capabilies or features that an implementation supports. A comment was made that we need to understand how this fits into a larger architecture. For example, what is it's relations to sequencing. A question was whether this focuses on cmi data or a cmi system.