anchor.diff:  
   ;;;; ======= Exported API ==========================================================================
   
  -(defun build-app (main-module-path &key template-path output-path prefix-lookup runtime-uri)
  +(defun build-app (main-module-path &key template-path-arg output-path-arg prefix-lookup runtime-uri)
     "Build a wrapper html file for a jwacs application"
     (flet ((get-path (param-path path-name path-type)
              "If PARAM-PATH is non-NIL, return it.
  
positive.code:              (merge-pathnames (make-pathname :name path-name :type path-type)
                                main-module-path)
               param-path)))
      (let ((template-path (get-path template-path nil "template"))
            (output-path (get-path output-path nil "html"))
            (bootstrap-path (get-path nil "bootstrap" "html"))
            (runtime-module (if (null runtime-uri)
                              (make-module :type 'js
  
negative.code: 
        ;; If no template file exists, generate one
        (when (null (probe-file template-path))
          (with-open-file (out template-path :direction :output)
              (format out "~A" *default-template*))
          (unless (probe-file bootstrap-path)
            (with-open-file (out bootstrap-path :direction :output)
            (format out "~A" *default-bootframe*))))
        
        ;; If no runtime file exists, generate one
  ;TEST      (when (null (probe-file (module-path runtime-module)))
        (when t
  