The symbols found in Gravity Falls: Journal 3, created by Bill Cipher.
Gravity Falls and everything to do with it are the property of Disney.
-- Spoilers --
Bill drew this language in secret messages throughout the Journal, as well as a wheel which can be used for decoding.
This font was created around the theme of repetition, it was inspired by Art Deco design and how repetition and pattern aren't just pointless ornaments but fundamental to the structure of the font. I have been able to reach this stage after 5 weeks of continuous development, sketching and experimentation which I focused around trying to create a bridge between 2D and 3D fonts. Built up of a single repeated component this font is not suitable or made for large amounts of text, but instead has been created to highlight the strength and complexity of each individual letter. http://oliver-james-town.blogspot.co.uk