Line of 8, Bend the Line

START: a tidal line (#52); mentally locate center of line	ACTION: break at center; each half rotates 90° to face center	END: facing 4-lines, centered as shown

If you're in a tidal line and only hear ‘bend the line’, then you
do something different (see bend the line).
You must listen for the extra words, ‘line of 8, bend the line’.