$ ruby example15.rb
 _buf << %Q`<h1>#{@title}</h1>
<ul>\n`
for item in @items
 _buf << %Q` <li>#{CGI.escapeHTML((item).to_s)}</li>\n`
end
 _buf << %Q`</ul>\n`

<h1>rbTenjin Example</h1>
<ul>
 <li>&lt;foo&gt;</li>
 <li>&amp;bar</li>
 <li>&quot;baz&quot;</li>
</ul>