KNODE, NPT, NODE
Defines a keypoint at an existing node location.
NPTArbitrary reference number for keypoint. If zero, the lowest available number is assigned [NUMSTR].
NODENode number defining global X, Y, Z keypoint location.  If NODE =
P, graphical picking is enabled and all remaining command fields are ignored
(valid only in the GUI).  A component name may also be substituted for NODE.