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  wdelline                                                              WNDWC
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  Function       Deletes a line at a specified row, scrolls up the remaining
                 part of the window and clears the bottom row.
  Syntax         void winsline( unsigned char row );
  Remarks        Similar to Turbo C's delline, the indicated row of the
                 window will be deleted.  The bottom row is cleared with
                 tws.wndwattr (SAMEATTR is permitted).  The cursor is not
                 moved, but is ready to be moved with wgotoeos as EOS is set
                 to the first column of the cleared row.
  Return value   None.
  Screens        All video pages and virtual screens.
  EOS            Updated to first cleared column of the cleared row.
  Restrictions   Stay within window limits.