title: How to specify arguments for substitute in mapcar?
body: <p>For example, I have a list of "strings" : ("First" "second" "third.").<br>
  And I need to replace all "s" to "a" -> (("Firat")...etc
  I've found very beautiful function called substitute, but it works only for one sequence.<br>
  Can I use substitute in mapcar ? Something like this:<br></p>
  
  <pre><code>(mapcar 'substitute #\d #\o '(("test") ("wow") ("waow")))
  </code></pre>