Defines position information for a new label field. This dialog box appears when you
select a positional field in the Layout text box on the Label Editor dialog box and click Define Position 
.
Properties
Displays a list of the properties currently assigned to the positional field. For example, you select the label text field <F>CGx</F> and you want to represent the value as 5.45m GlobalCS East. You would need to define the coordinate system, the name of the +/- axes, and the read-out order for the values.
The Matrix Rule property provides a drop-down list of the last 10 selected rules. Selecting Create New Rule in the drop-down allows you to create a new positional definition rule. For more information on creating a new positional rule, see Matrix Rule Dialog Box. Selecting More in the drop-down displays a Browse dialog to select an existing rule. For more information on selecting an existing rule, see Select Rule Dialog Box (Label Editor - Position Definition).
The Readout property has a drop-down that contains all of the possible combinations for value,
coordinate system, and axis, including cases where you might want to omit one of the
read-out options.