Traditional rhythmic notation is used. Traditional rhythmic notation is used. The staff appears as 3 solid horizontal lines alternating with 3 dashed horizontal lines. Traditional rhythmic notation is used. This could be thought of as a 7-line staff with only 3 lines visible.
Notes falling on invisible lines use leger lines.
Traditional rhythmic notation is used. That is why the 2 pair of lines are drawn close together. Traditional rhythmic notation is used.