lispdoc - results for array-index

alexandria.0.dev:array-index
Type: Type designator for an index into array of LENGTH: an integer between 0 (inclusive) and LENGTH (exclusive). LENGTH defaults to ARRAY-DIMENSION-LIMIT.
  
(array-rank array)
Function: Return the number of dimensions of ARRAY.
 Mentioned in:
CLtL2 - 17.3. Array Information
CLtL2 - 25.1.4. Similarity of Constants
HyperSpec - Function ARRAY-RANK