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

putc 

        # IO.putc

(from ruby core)
---
    ios.putc(obj)    -> obj

---

If *obj* is Numeric, write the character whose code is the
least-significant byte of *obj*.  If *obj* is String, write the first
character of *obj* to *ios*.  Otherwise, raise TypeError.

    $stdout.putc "A"
    $stdout.putc 65

*produces:*

    AA

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.