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

+ 

        # String.+

(from ruby core)
---
    string + other_string -> new_string

---

Returns a new String containing `other_string` concatenated to `self`:

    "Hello from " + self.to_s # => "Hello from main"

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.