lispdoc - results for remove-duplicates

(remove-duplicates sequence &rest args &key (test #'eql) (test-not nil)
 (start 0) (end nil) from-end (key nil))
Function: The elements of SEQUENCE are compared pairwise, and if any two match, the one occurring earlier is discarded, unless FROM-END is true, in which case the one later in the sequence is discarded. The resulting sequence is returned. The :TEST-NOT argument is deprecated.
Example:
(defun distinct-rows (rows schema)
  (remove-duplicates rows :test
                     (row-equality-tester
                      schema)))
Mentioned in:
CLtL2 - 14.3. Modifying Sequences
HyperSpec - Function REMOVE-DUPLICATES, DELETE-DUPLICATES
On Lisp - Creating Context
PCL - higher order function variants
Successful Lisp - chapter13