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

each_line 

        # Pathname.each_line

(from ruby core)
---
    pathname.each_line {|line| ... }
    pathname.each_line(sep=$/ [, open_args]) {|line| block }     -> nil
    pathname.each_line(limit [, open_args]) {|line| block }      -> nil
    pathname.each_line(sep, limit [, open_args]) {|line| block } -> nil
    pathname.each_line(...)                                      -> an_enumerator

---

Iterates over each line in the file and yields a String object for each.

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.