Albert Wagner <alwagner / tcac.net> writes: > I see some class definitions contain "include" and "extend" statements. > I can find no doc refs to these. Also, "autoload". If these are in the > manual or user guide, please point me in the right direction. Is there > an english translation to ruby-1.4.4/ext/tcltklib/MANUAL.euc? Thanks > ahead for any help. Both include and extend take one or more modules and add their methods and constants in to something: include adds in to a class definition, which extend adds to a particular object. For example module Cheery def hello puts "Toodle-pip, old chap!" end end class Person include Cheery def other puts "other" end end p = Person.new p.hello #=> Toodle-pip, old chap! p.other #=> other s = "A String" s.extend Cheery s.hello #=> Toodle-pip, old chap! Every language needs Cheery strings. Dave