subst

(subst newItem oldItem list)

This function replaces all occurrences of oldItem in input list with newItem, and returns the modified list.

Arguments	newItem any Lisp atom or list oldItem any Lisp atom or list list any Lisp list
Return	the list with all replaced items (or the original list, if oldItem is not present)
Example	(setq lst (list 0 1 2 3 -99 5 6 -99)) (subst 0 -99 lst) returns (0 1 2 3 0 5 6 0)
Remarks