Pat expalains the advantages of using the Electronic Handwheels option and TRAKing. With these features, you get the manual control and feel of real handwheels and the ability to run through your program events before letting the computer take over. This feature was demonstrated on the TRAK K3 Knee Mill with a Prototrak KMX CNC Upgrade.
Once you use TRAKing, you will never want to crank manual handles again!
(requires purchase of KMX Offline Programming)