I've been using Lectora for almost three years now. Lectora allows developers to take a snippet of code and reuse it on all your pages. This saves time and maintenance costs. You may want that code to work differently on some of the pages. Ideally, you'd still only have that code in one place but set up an exception for how to do this. I show an example of how to do this in my guest blog post for Integrated Learning Services Creating a Smart Next Button in Lectora.