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

FalseClass 

        # FalseClass < Object

(from ruby core)
---
The global value `false` is the only instance of class FalseClass and
represents a logically false value in boolean expressions. The class
provides operators allowing `false` to participate correctly in logical
expressions.
---
# Instance methods:

    &
    ===
    ^
    inspect
    to_s
    |

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.