<http://schema.org/description>
"&lt;p&gt;The ability to mark workpieces is an important service that many job shops and product manufacturers must offer their customers. Marking allows parts to be identified and traced to their origin.&lt;/p&gt;"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/articles/direct-part-marking-enhances-product-traceability>