Move current position: Press ¡°<-¡± or ¡°->¡± key.
Make or change the selected part: Press ¡°<-¡± or ¡°->¡± while hold the ¡°Shift¡± key.
Move the start or end line: When you have a selection, if you press the ¡°<-¡± with ¡°Shift¡± hold, you move the start line, otherwise you move the end line.
Move the selection: Lock the selection and then press ¡°<-¡± or ¡°->¡± key.
Active the wave window: If the line DOSE NOT move when you press the arrow key, you should click the wave window to set focus on it.
