OBJECTIVES It opens a page containing the description of the Unit and/or Module objectives
	HOME It makes come back to the SOLE Homepage
	MODULE MAP It makes come back to the Module Map
	UNIT MAP It makes come back to the Unit Map. Each Unit has its own map
	IN-DEPTH RESEARCH It contains additional information concerning the topic of the lesson
	SELF-CHECK EXERCISE It allows trainees self-evaluating their comprehension of both the lesson and the in-depth research
	ACTIVITY It contains tasks to be performed online (navigation of the Internet, e-mailing) with the possibility to send solutions/answers to a database that can be freely consulted