<p>For more information on ProIcon in relation to Icon, please see the following article:</p> <p>Corre, Alan D. \"Technical Reviews: ProIcon.\" <em>Computers and the Humanities</em> 24.4 (1990): 301-303. <a href=\"http://link.springer.com/article/10.1007/BF00123417\" target=\"_blank\">Web</a>.</p>