Arrays (or matrices) hold a collection of different values at the same time. Individual elements are accessed by subscripting the array.
A 15 element array can be visualised as:
Figure 6: A One Dimensional (1D) Array
And a 5 3 array as:
Figure 7: A Two Dimensional (2D) Array
Every array has a type (REAL, INTEGER, etc) so each element holds a value of that type.
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