anchor.diff:             yield-callback-
              :void))
          (defun csound-set-playopen-callback (this playopen--)
  -         (verrazano-support:virtual-funcall
  +         (virtual-funcall
              this
              81
              0
  
positive.code:            sco-name
             :int))
         (defun csound-perform-4 (this arg1 arg2 arg3)
           (verrazano-support:virtual-funcall
             this
             17
             0
  
negative.code:            csd-name
             :int))
         (defun csound-perform-3 (this orc-name sco-name)
           (virtual-funcall
             this
             16
             0
  