How to get legend outside of plot?

    I am creating a CDF plot function more user-friendly than any default
r
function.  Depending upon the bimodality of the data (it is often
bimodal),
or any other strange data trends, the points can end up gathering in just
about any corner of the plot.  So, when I add a legend, whether I choose
to
add it in the bottom right, top left, or wherever, it will sometimes end
up
putting the legend right on the data itself.  So, I tried to force the
legend to certain data values (e.g., the largest in x & the smallest in y,
to "really" get the bottom right), but then this means most of the legend
is
missing because it is outside of the "plot region".
    How can I create a legend that is fully outside of the plot, similar
to
what excel does by default, for example?

                                                  Thanks!
                                                      Mike

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