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

inspect 

        # Regexp.inspect

(from ruby core)
---
    rxp.inspect   -> string

---

Produce a nicely formatted string-version of *rxp*. Perhaps
surprisingly, `#inspect` actually produces the more natural version of
the string than `#to_s`.

    /ab+c/ix.inspect        #=> "/ab+c/ix"

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.