      \fitem{string2proc}(s:string): returns the proc whose name is
      given in argument. The initial \code{::} in the proc identifier
      can be omitted. Useful to convert directly a string received
      through OSC or through the \code{setvar} message into a function
      that can be applied.

      For example, assuming that \var{channel} is set in the Max
      environment to a tab of two element, the first being a process
      identifier and the second an integer, then the code
      \begin{lstlisting}
            whenever($channel)
            {
                 :: (@string2proc($channel[0])) ($channel[1])
            }
      \end{lstlisting} %% $
      will react to the assignment to \var{channel} by calling the
      corresponding processes with the specified integer. 


      %%% -------------------------------------------------------

