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  wwritec                                                               WNDWC
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  Function       Writes a string centered column-wise to the current window
                 using the window attribute.
  Syntax         void wwritec( unsigned char row, char *astr );
  Remarks        This routine writes the string astr centered between the
                 left and right columns of the window.  The attribute used is
                 wndwattr from the window structure.  If SAMEATTR is used for
                 wndwattr, then the attributes will remain the same on the
                 screen.
  Return value   None.
  Screens        All video pages and virtual screens.
  EOS            Updated.
  Restrictions   Stay within the window limits.  Long strings will not wrap
                 around to column 1.
     Example        Write a message centered in a window on row 5:

                   wwritec( 5, "My message" );