These page markers can be used to hold the page to favorite recipes, important pages that you want to refer back to in a book, favorite quotes, and to hold the page for important study material. They are a great way to help annotate a book. They can also be used as a bookmark. There is an arrow which can also point to a certain line in the page.
These are meant to used similar to the thin sticky notes, similar to those show below. I also personally do not like writing or highlighting in books because I often donate them after reading, so this is another great way to annotate or hold the place of some favorite passages!

Use different colors for different details, such as blue for favorite quotes, yellow for important passages, etc…
https://www.youtube.com/watch?v=wCjSioWfMB8 - Here is a YouTube video on how you can annotate your books if interested. 1:50 - 8:20 is about sticky notes / page markers which this print can be used in place of.
Each page marker is less than a 1 minute print. For the 0.4mm version, attached is gcode for a single page marker, and also gcode to print 12 at a time. There are 3 different thickness here; 0.4mm, 0.6mm, and 0.8mm. 0.4mm is the best in my opinion, but some makers may want a thicker version, so they are available as well.
All page markers stick out of the page by 1.50mm.
All printed at 0.2mm layer height. Both PLA and PETG work great.
The author marked this model as their own original creation.