protected void paintPlainLine(int lineIndex,Graphics g,int x,int y){
  super.drawLine(lineIndex,g,x,y);
}

protected void paintPlainLine ( int lineIndex , Graphics g , int x , int y ) { super . drawLine ( lineIndex , g , x , y ) ; }
paint a line of text , without syntax colouring . this is provided as a convenience for subclasses .
