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Mirroring of HTML (3) 

Lists of contents and lists of attributes are processed recursively and spliced together with their context
 

(body

    (ul 
      (map li (list "one" "two" "three")))
    
    (let ((attributes (list 'start "3"))
          (contents   (map li (list "one" "two" "three"))))
       (ol 'id "demo" contents attributes)))
  )
)
 

<body>
   <ul><li>one</li> <li>two</li> <li>three</li></ul>
    
   <ol id="demo" start="3"><li>one</li> <li>two</li> <li>three</li></ol>
</body>