Schematic 2

Schematic 1 is an unique story item that allows the player to build the Glider, it was added to The Forest in v1.10.

Gameplay
The schematic can be accessed in the back pages of the survival guide, where all the story items you find are located.

More info required

Location
The second schematic is found in the Kanji Cave in the middle of the cave room. Once unlocked the player gains the ability to create the Glider.

The schematic page also contains some rough sketches of what appears to be a bat overlayed on the frame of the glider with some angles drawn, a bird with its wing and head separated, a hoof of an animal, a skull with crosses, as well as an eyeball with crosses near it.