An array can be a general array, meaning each element may be any object, or it may be a specialized array, meaning that each element must be of a restricted type.
The phrasing ``an array specialized to type <<type>>'' is sometimes used to emphasize the element type of an array. This phrasing is tolerated even when the <<type>> is t, even though an array specialized to type t is a general array, not a specialized array.
The next figure lists some defined names that are applicable to array creation, access, and information operations.
adjust-array array-has-fill-pointer-p make-array adjustable-array-p array-in-bounds-p svref aref array-rank upgraded-array-element-type array-dimension array-rank-limit upgraded-complex-part-type array-dimension-limit array-row-major-index vector array-dimensions array-total-size vector-pop array-displacement array-total-size-limit vector-push array-element-type fill-pointer vector-push-extend
Figure 15-1. General Purpose Array-Related Defined Names
15.1.2.2 Required Kinds of Specialized Arrays