# Interface: com.pnfsoftware.jeb.client.api.IUnitFragmentPositionChangeListener

Interface to be implemented by listeners of positional changes in unit fragments rendered by the GUI client. Registered via [IGraphicalClientContext#registerUnitFragmentPositionChangeListener(IUnitFragmentPositionChangeListener)](IGraphicalClientContext#registerUnitFragmentPositionChangeListener(IUnitFragmentPositionChangeListener)).

## Method: onUpdate
- parameter: `e`, type: `com.pnfsoftware.jeb.client.api.UnitFragmentPosition`

Description: Receive a update.
parameter: e: change object

