code: char verticals(int row, int column) {
  		boolean result = (match & LEFT) == LEFT && column == column1;
  		result |= (match & INNER_VERTICAL) == INNER_VERTICAL && column > column1 && column < column2;
  		result |= (match & RIGHT) == RIGHT && column == column2;
  
  		result &= row >= row1;
  		result &= row < row2;
  		return result ? style.verticalGlyph() : BorderStyle.NONE;
  	}
docs: /*default