16.1  What are the three tools or skills in the standard CNC ToolBox?

16.4 Rattle off a good possible answer using each set of skills.
    a.)  Q.  What is the machine's stroke in Z-axis?
        i.)  (K)
       ii.)  (D)
      iii.)  (PS)
    b.)  Q.  Why can't I change a parameter?
        i.)  (K)
       ii.)  (D)
      iii.)  (PS)