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

* 

        # Integer.*

(from ruby core)
---
    self * numeric -> numeric_result

---

Performs multiplication:

    4 * 2              # => 8
    4 * -2             # => -8
    -4 * 2             # => -8
    4 * 2.0            # => 8.0
    4 * Rational(1, 3) # => (4/3)
    4 * Complex(2, 0)  # => (8+0i)

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.