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

Ripper::Lexer::Elem 

        # Ripper::Lexer::Elem < Object

(from ruby core)
---
# Class methods:

    new

# Instance methods:

    []
    event
    inspect
    message
    pos
    pretty_print
    state
    to_a
    to_s
    tok

# Attributes:

    attr_accessor event
    attr_accessor message
    attr_accessor pos
    attr_accessor state
    attr_accessor tok

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.