This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Gem::Specification.default_executable (from ruby core) --- Sets the default executable for this gem. Deprecated: You must now specify the executable name to Gem.bin_path.
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.