Can any one please explain me this expression?

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Hi Authors,

One of Clint gave me a Videohive After Effects template for some changes, I am a graphic designer dont know much about animation and expression, I saw this expression added to a Motion Tile and it diid all the crazy movment Can anyone please explain me what does it stand for?

thisComp.layer("Slider").effect("Motion")("ADBE Point Control-0001")

thisComp.layer("Slider").effect("Zoom W")("ADBE Slider Control-0001")

thisComp.layer("Slider").effect("Zoom H")("ADBE Slider Control-0001")

Thanks!
Rafiqu