I've tried explaining this method many times and finally decided to just post some pics so people can see what I mean. This is how we used to fold our pages in our military field message pads so that we could keep used pages for reference but out of the way to get to the next fresh page. Once a page was used you would fold the bottom of the page along the side like this.... Then as you filled more pages you would alternate sides...... This allowed you to keep you book neat and tidy while having instant access to your first blank sheet... This method works in all books, on field notes I fold on the side alternating top and bottom corners, and I still use it today. I will sometimes mark a reference date or note on the folded corner for easy searching. I hope you find this helpful.