Method scroll

ij/src/main/java/ij/text/TextPanel.java:544–550

(int inc)

	public void mouseEntered (MouseEvent e) {}

	private void scroll(int inc) {
		synchronized(this) {
			sbVert.setValue(sbVert.getValue()+inc);
			iY=iRowHeight*sbVert.getValue();
			tc.repaint();
		}
	}

	/** Unused keyPressed and keyTyped events will be passed to 'listener'.*/
	public void addKeyListener(KeyListener listener) {