Well it could be i guess...
arrays are like variables that can store more than one item.
So if you want to make something like a mouse recorder, you wouldnt need to create hundreds of variables to record the x and y position, you would just need 2 arrays, or lists, that would store all x and y positions. Later, you can recall all the positions.
You can build lists with arrays too. If you have Scratch 1.3, you can look at Fruit RPG and see how they do it.
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