errorLineNum = numRows;
	public final void setRowsCols(int rows, int cols) {		// default number of rows and columns		numRows = rows;		numCols = cols;		lenScreen = numRows * numCols;//		screen = new ScreenChar[lenScreen];////		for (int y = 0; y < lenScreen; y++) {//			screen[y] = new ScreenChar(this);//			screen[y].setCharAndAttr(' ', initAttr, false);//			screen[y].setRowCol(getRow(y), getCol(y));//		}		errorLineNum = numRows;      planes.setSize(rows);		Rectangle r = gui.getDrawingBounds();		resizeScreenArea(r.width, r.height);		gui.repaint();	}