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

| 

        # TrueClass.|

(from ruby core)
---
    true | obj   -> true

---

Or---Returns `true`. As *obj* is an argument to a method call, it is
always evaluated; there is no short-circuit evaluation in this case.

    true |  puts("or")
    true || puts("logical or")

*produces:*

    or

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.