anchor.diff:  		  (htm
   		   (:li
   		    (:div :class "col s12 m4 l4"
  -			  (:div :class "card blue-grey"
  +			  (:div :class "card medium blue-grey"
   				(:div :class "card-image"
   				      (:img :src (item-picture item) :width "25%" :height "25%" :class "materialboxed responsive-img")
   				      (:span :class "card-title truncate"
  
positive.code: 			    (htm
  			     (:li
  			     (:div :class "col s12 m4 l4"
  				   (:div :class "card blue-grey"
  					 (:div :class "card-image"
  					       (:img :src (item-picture item) :class "materialboxed responsive-img")
  					       (:span :class "card-title truncate"
  
negative.code:   (standard-page (:title "Login")
     (standard-login)))
  
  (define-easy-handler (rotate-image :uri "/rotate-image") (direction image)
    (let* ((invoice (find-invoice-from-cookie (cookie-in "current-invoice")))
  	 (rotation (/ PI 2))
  	 (root-dir (invoice-root-dir invoice))
  	 (image-name (subseq-img-path image)))
      (opticl:write-image-file
       (format nil (concatenate 'string root-dir "webimg/" image-name) rotation)
       (transform-image (read-jpeg-file (make-pathname :directory (concatenate 'string root-dir "webimg/")
  						     :name image-name))
  		      (reduce #'opticl:matrix-multiply
  			      (list (make-affine-transformation :theta rotation)))
  		      :transform-bounds t)))
     
    (redirect "/setthemcookies"))
  
  ;;;Latex constants---------------------------------------------------
  
  