All controls which allow absolute positioning have 3 standard properties:

• x - this is the X coordinate.

• y - this is the Y coordinate.

• z - this is the Z coordinate.

The x- and y-value is measured from the top left corner of the page.

The z-value indicates the drawing sequence - the layer. The layer information becomes important if controls overlap - the control with the higher z-value is drawn on top of the control with the lower z-value.