model.select(offset,caret);
model.select(offset,mark);
		public void mouseDragged(MouseEvent evt)		{			int line = model.yToLine(evt.getY());			int start = model.getLineStartOffset(line);			int offset = start + model.xToOffset(line,evt.getX());			// Opposite of caret			int caret = (model.getLeftBias() ?				model.getSelectionEnd() : model.getSelectionStart());			if(offset < caret)			{				model.select(offset,caret);				model.setLeftBias(true);			}			else			{				model.select(caret,offset);				model.setLeftBias(false);			}		}