Support for the Ruby 2.2 series has ended. See here for reference.
# File tk/lib/tkextlib/iwidgets/hyperhelp.rb, line 46 def back tk_call(@path, 'back') self end
# File tk/lib/tkextlib/iwidgets/hyperhelp.rb, line 36 def follow_link(href) tk_call(@path, 'followlink', href) self end