The Q&A ( question and answer ) plugin is a simplified alternative to using the documents plugin and provides categorized lists for help purposes.  Unlike the documents plugin, categories in Q&A can be nested to create a hierarchy schema.
    
Although simplified text can be used to provide the answer to questions, the plugin allows for rich content to be created for answers.
    
There aren't many options for this plugin but it does allow you to enable statistics to be logged.  There is only one option, whether to log helpful, not helpful stats.