<http://schema.org/description>
"&lt;p&gt;You know that to truly qualify a program (keep it from ever having to be changed in the future), you must eliminate those things that change from one time the job is run to the next.  But certain variables may be beyond the control of CNC people. &lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/columns/handling-raw-material-z-surface-variations>