The "Format" is how the position
value should look. An X axis position might be displayed several
different ways, depending on the machine. The position
X 1.25 might need to be displayed as...... X01.25
or X1.2500 or X12500. These 3 examples are commonly
refered to as 2 digit leading, 4 digit trailing and 4 digit
trailing with no decimal point.