This example demonstrates how to parse OPML with Ruby.
First install the gem.
```ruby
gem install opml
```
Then run this code:
```ruby
require 'pp'
require 'rubygems'
require 'opml'
opml = Opml.new(File.read('opml.xml'))
pp opml
opml.outlines[0].attributes['xml_url']
opml.outlines[0].attributes['html_url']
opml.outlines[0].attributes['title']
```