The procedure at left was once taught as part of one’s elementary education. This is a useful guide to matching practical respect for books as physical objects to reverence for their contents.
This image has been posted on a number of places on the web. So far as we know it is in the public domain, and we share it on that assumption.
Holy Transfiguration Monastery Publications, Inside our Books and the Sources behind them, is a companion site to www.thehtm.org.