This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# Gem::Specification.extra_rdoc_files (from ruby core) ### Implementation from Specification --- extra_rdoc_files() --- Extra files to add to RDoc such as README or doc/examples.txt When the user elects to generate the RDoc documentation for a gem (typically at install time), all the library files are sent to RDoc for processing. This option allows you to have some non-code files included for a more complete set of documentation. Usage: spec.extra_rdoc_files = ['README', 'doc/user-guide.txt']
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.