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

div 

        # Integer.div

(from ruby core)
---
    div(numeric)  -> integer

---

Performs integer division; returns the integer result of dividing `self`
by `numeric`:

      4.div(3)      # => 1
      4.div(-3)      # => -2
      -4.div(3)      # => -2
      -4.div(-3)      # => 1
      4.div(3.0)      # => 1
      4.div(Rational(3, 1))      # => 1

    Raises an exception if +numeric+ does not have method +div+.

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.