# File lib/Borges/Component/Tutorial.rb, line 82
  def page3
    return %^The second responsibility of a component is to handle user interface behavior.  This usually means having a method for each link or submit button it displays.  The Counter class has two such methods: <tt>#increment</tt>, which maps to the ++ link, and <tt>#decrement</tt>, which maps to the -- link.  Their implementations are very simple:
  <pre>
  <b>increment</b>
    count := count + 1
  
  <b>decrement</b>
    count := count - 1
  </pre>
  #{counter}
  Methods that are directly mapped to links or buttons are sometimes known as <i>action</i> methods
  <p>
  You can use this editor to modify the <tt>#increment</tt> action method.  For example, you can try changing it to
  <pre>
  <b>increment</b>
    count := count + 2
  </pre>
  Test your changes with the counter above
  #{incrementEditor}
  ^
  end