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  makewindow                                                            WNDWC
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  Function       Makes a window.
  Syntax         void makewindow( unsigned char row, unsigned char col,
                                  unsigned char rows, unsigned char cols,
                                  int wattr, int battr, int brdrsel,
                                  int windowname );
  Remarks        This is the main routine to create windows.  row, col, rows,
                 and cols are the absolute coordinates for the window
                 inclusive of any border.  For RELMODE, (row,col) is window
                 relative.  wattr and battr are the window and border
                 attributes, respectively (SAMEATTR is permitted).  brdrsel
                 is the selection of one of 15 different borders.  windowname
                 is a unique window name required for random access.  EOS set
                 to (1,1).
  Return value   None.
  Screens        All video pages.
  Restrictions   Minimum size - (1x1) without borders, (3x3) with borders.
  Heap           Allocates underlay size until removed.