Subset of pages
mAuthor makes it possible to create a new presentation on the basis of the content used in the already existing one. A new presentation will consist of the selection of pages chosen from the previously created lesson.
It can be done by selecting the "More actions..." -> "Choose subset of pages" options respectively. Then it is enough to check the boxes next to the pages chosen to be included in a new lesson. Clicking on the "Create new lesson" button will create a new presentation with the name starting with "Subset of...".