title: how to draw only axis on plot, not rectangle
body: <p>Sorry I cannot find this: when I draw any plot in R, I have arrround graph area rectangle. Its left side is X axis and bottom line is Y axis, which I want to have. But there are always also lines on the right side and on the top of graph area and these I do not want. How to suppress that two lines? I want only two lines - axis, not rectangle. Thanks
  (that rectangle which I mean includes axis)</p>