(defmacro svg (&body body) `(tag svg (xmlns "http://www.w3.org/2000/svg" "xmlns:xlink" "http://www.w3.org/1999/xlink") ,@body))
but I think this is...
(defmacro svg (width height &body body)
`(tag svg (xmlns "http://www.w3.org/2000/svg"
"xmlns:xlink" "http://www.w3.org/1999/xlink"
height ,height
width ,width)
,@body))
Please confirm this and inform correct script.