Lesson-Server communication based on AICC API (appendix B) mechanism
		This allows each vendor to specify browser server communication
		Requires parent/navigation frame to host API
	Some AICC calls have been slightly modified
	AICC data like "Paths" has been entirely removed. Some capabilities were not supported by any LMSs, but in the future they may be missed.
	Course Structure File uses IMS 1.1 directly
		Less structural information than AICC
		More per-file information
	Specification suggests creating an archive in zip format for transfer of the course - this is very useful.