anchor.diff:               color
                color-interpolation
                color-rendering
  -             offset)
  +             offset
  +             stop-color
  +             stop-opacity)
   
   (def-svg-tag script
                id
  
positive.code:                                     effective-attributes)))
       (emit-body body)
       (emit-close-tag ,(string-downcase (symbol-name name))))))
  
  (eval-when (:compile-toplevel :load-toplevel :execute)
   (defun concat-symbol (&rest args)
  
negative.code:              y2
               transform)
  
  (def-svg-tag-humpback "linearGradient"
               id
               xml:base
               xml:lang
  