thanks for your edits on the manuals, instructions and so on. Maybe you've noticed, that nearly all the manuals you've edited can be crafted through a second recipe, too. That's the reason for the tag "manual2". When you take a look at the articles history, you'll see, that there was a time, when more than one manual was shown. I don't know, why the template has been changed.
So maybe, if you have the time, you can add all the second recipe boxes.