<http://schema.org/description>
"&lt;p&gt;Older model Fanuc controls and some current model Fanuc-compatible controls have a feature to help you machine round counterbores with an end mill (G12 and G13).  For some reason, Fanuc stopped providing these helpful G codes. &lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/columns/a-circle-milling-custom-macro>