An array is a collection of elements, each that can be accessed as an index of the array. It can hold multiple elements, but all of them must have the same type. Here's a visual example...
DIM ARR[5] 'Declare an array of size 5.
ARR[3]=7 'Assign 7 to the element in the array at index 3
___ ___ ___ ___ ___
|_0_|_1_|_2_|_3_|_4_| < Indices
|_0_|_0_|_0_|_7_|_0_| < Elements and their values
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