A package is a set of elements, HTML pages, or PGN files, that the Viewer treats as a set. For example, we have converted the EDAMI, weekly online lesson number 316, in a package. This lesson contains:
Introduction to the current subject (each lesson deals with a different subject)
One model game very well annotated.
5 illustrative games with brief notes.
3 exercises about tactics related to the model game.
1 instructive ending
The elements that constitute this package are compressed in the file clase316.zip. In order to have access to this lesson you need to follow these steps:
Download the package clase316.zip. Press here to save the file in a folder on your PC.
Execute the Viewer and press the button (replay in local mode), located in the toolbar in the top side of the window. Look for the file clase316.zip that you have just downloaded and open it up.
Packages. 
(replay in local mode), located in the toolbar in the top side of the window. Look for the file clase316.zip that you have just downloaded and open it up.