This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Net::OpenTimeout < Timeout::Error (from ruby core) --- OpenTimeout, a subclass of Timeout::Error, is raised if a connection cannot be created within the open_timeout. ---
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.