<http://schema.org/description>
"&lt;p&gt;Almost every offset entry requires some kind of calculation to be made before the offset value can be entered.  Say, for example, the target diameter for a turning tool is 3. &lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/columns/eliminating-calculations-for-offset-entries>