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

write 

        # StringIO.write

(from ruby core)
---
    strio.write(string, ...) -> integer
    strio.syswrite(string)   -> integer

---

Appends the given string to the underlying buffer string. The stream
must be opened for writing.  If the argument is not a string, it will be
converted to a string using `to_s`. Returns the number of bytes written.
 See IO#write.

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.