::ARGF: Object

::ARGV: Array[String]

::CROSS_COMPILING: NilClass

::FALSE: FalseClass

::NIL: NilClass

::RUBY_COPYRIGHT: String

::RUBY_DESCRIPTION: String

::RUBY_ENGINE: String

::RUBY_ENGINE_VERSION: String

::RUBY_PATCHLEVEL: Integer

::RUBY_PLATFORM: String

::RUBY_RELEASE_DATE: String

::RUBY_REVISION: Integer

::RUBY_VERSION: String

::STDERR: IO

::STDIN: IO

::STDOUT: IO

::TOPLEVEL_BINDING: Binding

::TRUE: TrueClass