The sound effects often serve as a mnemonic device, in that dancers associate the execution of the step with the particular sounds.

And the special effects serve the story without overwhelming it.

"Arabian Nights" is about storytelling, so it's no surprise that its creators allow the effects to serve the tales.

Even today, sound effects from the Atari 2600 version often serve as generic video game sounds in films and television shows.

The eddy effects of the gyre serve to retain pollutants in its center.

In this case, the effects serve to enhance clarity, while adding a surreal aspect to an otherwise realistic film.

But each materialization seemed to bring a different gravity field whose effect served only to keep his balance unstable and his concentration distracted.

The effect only served to make his person seem less elegant, not more.

Thus, the speaker's effect on the audience serves as a key theme throughout Book II.

The reviewer wrote, "The often-surrealistic effects always served the songs, not the other way around."