5.3.79
     *  Can now play sounds over more than two channels.
     *  Asynchronous play in scripts (see [1]Demo window).
     *  EEG: blue-to-red colour scale for scalp distributions.

   1. Demo_window.html
 5.3.80
     *  Praat preferences: choice between Chinese and Japanese style for
       Han characters.
 5.3.81
     *  EEG: can work with status numbers instead of only with status
       bits.
     *  Windows: repaired a bug that could cause Praat to crash if there
       was a 96-dpi printer.