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

<= 

        # Integer.<=

(from ruby core)
---
    self <= real -> true or false

---

Returns `true` if the value of `self` is less than or equal to that of
`other`:

    1 <= 0              # => false
    1 <= 1              # => true
    1 <= 2              # => true
    1 <= 0.5            # => false
    1 <= Rational(1, 2) # => false

Raises an exception if the comparison cannot be made.

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.