Complex sentence: The anime series Serial Experiments Lain was influenced by NeXTSTEP and Mac OS. References may be found throughout the show and its affiliated media, most notably the slogan for the Lain PSX Game, "Close the world, Open the NeXT".
Split into simpler sentences: The anime series Serial Experiments Lain was influenced by NextStep and Mac OS, references may be found throughout the show and its affiliated media. Most notably the slogan for the Lain PSX Game "Close the world, Open the NeXT".