This can be done in various ways, but it is really important to know what type of navigation you use in the course.For example: When I build a straight-ahead course (no skipping) I make sure that there are only buttons for "forward" and "backward". No table of contents, no fancy things that make then go back to some other chapter or anything like that. If you do use navigation, you could solve things the hard way, by using variables. You can set a variable to a standard when the user views the page (ie works through the course as normal, and clicks the right button). You can then add variables to transport the user back to last visited location or a standard page if something was not done yet. Example:ON view DO goto "page 1 of chapter 2"DO ONLY WHEN "pagevisited" EQUAL TO "0"Note: Setting up such a pattern can be a lot of work. So basically you need to make sure what navigation will be used before trying such "drastic" measures.By the way ,what version of Lectora do you use?Hope this helps :)