Array Dimensions (ANSI and GNU Common Lisp Document)

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#### 15.1.1.2 Array Dimensions

An axis of an array is called a dimension .

Each dimension is a non-negative

fixnum;

if any dimension of an array is zero, the array has no elements. It is permissible for a dimension to be zero, in which case the array has no elements, and any attempt to access an element is an error. However, other properties of the array, such as the dimensions themselves, may be used.