Date   : Sun, 02 Nov 1986 20:29:53-EST
From   : Mark Becker <Cent.Mbeck%OZ.AI.MIT.EDU@mit-xx.ARPA>
Subject: BDOS ^S function Applications Note

Digital Research released Applications Note 05, dated 2/20/82, from
which I quote:

       "The control-S function controls screen scrolling during CRT
        output.  However, the system does not recognize control-S if
        you type another character before it."

     The note then gives a three-location patch for the problem.  I
think someone was looking for this.