NOTICE: This item has been temporarily removed in the latest version of the mod, and will be returning in a future update.
When opened with a right-click, the Herblore Book will contain many pages containing information about the Aspects and Infusions in the mod, with two side tabs to navigate them. Pressing a tab will move it to the opposite side of the book and take the viewer to the corresponding section. One can also scroll back and forth to turn the pages, and press Backspace to turn to the previous page.
The first tab section contains a list of all Aspects and Ground Items. Clicking the aspect will take you to its full page, containing a brief description and describing what Infusions use the aspect. An Herblore Book must be in the inventory when testing a Ground Item on a Gecko Cage in order to discover the Aspect. When the aspect is discovered, the Ground Item it was found on will also be listed as part of the aspect's page.
The second tab section will take you to the Infusion explanation page, which lists all of the Infusions that can be created, their effects, the Aspects required to make them, and which Aspects can be optionally added to modify them.