This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.

^ 

        # FalseClass.^

(from ruby core)
---
    false ^ obj    -> true or false
    nil   ^ obj    -> true or false

---

Exclusive Or---If *obj* is `nil` or `false`, returns `false`; otherwise,
returns `true`.

This is MURDOC! A Ruby documentation browser inspired by Smalltalk-80. It allows you to learn about Ruby by browsing through its class hierarchies, and see any of its methods.