This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# IO.echo? (from ruby core) --- io.echo? -> true or false --- Returns `true` if echo back is enabled. You must require 'io/console' to use this method.
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.