This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# PrettyPrint.nest (from ruby core) --- nest(indent) { || ... } --- Increases left margin after newline with `indent` for line breaks added in the block.
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.