public synchronized void setUseRedo(final boolean useRedo) {
		if (validState && this.useRedo && !useRedo) { // Remove Redo
			redoQueue.clear();
			redoStore.clear();
		}
		this.useRedo = useRedo;
	}
public synchronized void setUseRedo ( final boolean useRedo ) { if ( validState && this . useRedo && ! useRedo ) { redoQueue . clear ( ) ; redoStore . clear ( ) ; } this . useRedo = useRedo ; }
Use Redo system?

@param useRedo (default true)