This is a Ruby tree! It shows every object from the Ruby Programming Language in a tree format.
# String.shellescape (from ruby core) --- str.shellescape => string --- Escapes `str` so that it can be safely used in a Bourne shell command line. See Shellwords.shellescape for details.
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.