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

chr 

        # String.chr

(from ruby core)
---
    chr -> string

---

Returns a string containing the first character of `self`:

    s = 'foo' # => "foo"
    s.chr     # => "f"

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.