Each insert comes with 64 pages of dotted, lined, blank, or gridded paper in your paper of choice (lightweight, sketch, watercolor), and there are also inserts for using the notebook as a planner ...

Bookshelf ‘The Notebook’ Review: The Power of the Blank Page Access to paper and the ability to scribble on it helped usher in the modern world.

Make it easier to write information down on your iPad, by adding lines and grids to the background when you're using Notes on iPadOS or iOS.