This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Symbol.downcase (from ruby core) --- downcase(*options) -> symbol --- Equivalent to `sym.to_s.downcase.to_sym`. See String#downcase. Related: Symbol#upcase.
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.