<http://schema.org/description>
"The majority of programmers use some kind of CAM system to prepare their CNC programs. The product of any CAM system is a G-code program from which the CNC machine will run. While CAM systems simplify programming, most programmers have to know something about G code. How much they must know depends upon five factors."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.mmsonline.com/columns/when-programmers-should-know-g-code>