This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# OpenSSL::ASN1::ASN1Error < OpenSSL::OpenSSLError (from ruby core) --- Generic error class for all errors raised in ASN1 and any of the classes defined in it. ---
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.