Modifying Sequences

CLtL2 Reference 

function FILL : (sequence item &optional (start 0) (end (length sequence))) 

function REPLACE : (sequence1 sequence2 &optional (start1 0) end1 (start2 0) end2) 

function REMOVE : (item sequence &optional (test #'eql) (key #'identity) (start 0) end count) 

function REMOVE-IF : (test sequence &optional (key #'identity) (start 0) end count) 

function DELETE : (item sequence &optional (test #'eql) (key #'identity) (start 0) end count) 

function DELETE-IF : (test sequence &optional (key #'identity) (start 0) end count) 

function REMOVE-DUPLICATES : (sequence &optional (test #'eql) (key #'identity) (start 0) end) 

function DELETE-DUPLICATES : (sequence &optional (test #'eql) (key #'identity) (start 0) end) 

function SUBSTITUTE : (new old sequence &optional (test #'eql) (key #'identity) (start 0) end count) 

function SUBSTITUTE-IF : (new test sequence &optional (key #'identity) (start 0) end count) 

function NSUBSTITUTE : (new old sequence &optional (test #'eql) (key #'identity) (start 0) end count) 

function NSUBSTITUTE-IF : (new test sequence &optional (key #'identity) (start 0) end count)