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

* 

        # Rational.*

(from ruby core)
---
    rat * numeric  ->  numeric

---

Performs multiplication.

    Rational(2, 3)  * Rational(2, 3)   #=> (4/9)
    Rational(900)   * Rational(1)      #=> (900/1)
    Rational(-2, 9) * Rational(-9, 2)  #=> (1/1)
    Rational(9, 8)  * 4                #=> (9/2)
    Rational(20, 9) * 9.8              #=> 21.77777777777778

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.