One way to customize the appearance of the book as users flip pages is by setting the size of the page fold using the C1Book.FoldSize property. Page folds appear when you hover the mouse over certain book zones, which serves as a cue that a page can be turned.

When you set the C1Book.FoldSize property, you will be setting the size of the page fold for all the pages – this includes the right top and bottom folds and the left top and bottom folds. For example, when C1Book.FoldSize is set to 40, all the page folds will appear similar to the following image:

If set to a higher number, the folds will appear more prominent. For example, when C1Book.FoldSize is set to 80, all the page folds will appear similar to the following image: