Ars Nouveau: Chapters

This mod adds a craftable bookmark item.
When that item is placed on a pedestal in front of an imbuement chamber, you can imbue your spell book to gain additional "chapters", which allow you to have 8x more spells on a single spellbook.
Switch chapters with shift + Z, shift + X, or shift + V for a radial menu.

Bookmarks change color depending on the flower used in their crafting recipe, and when a bookmark is used to imbue a book with an additional chapter, that chapter will appear the color of the bookmark which was used.