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

include? 

        # String.include?

(from ruby core)
---
    include? other_string -> true or false

---

Returns `true` if `self` contains `other_string`, `false` otherwise:

    s = 'foo'
    s.include?('f')    # => true
    s.include?('fo')   # => true
    s.include?('food') # => false

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.