[R] catering for rescaling

[Geoffrey]

My barplot has nicely left justified horizontal labels, the names of 
people. Written using text() . I use par("user")[1] - OFFSET to get the 
placed nicely.

Now of course if i manually rescale/zoom the plot the labels get redrawn 
at the 'wrong' location, including off the left of the plot.

I assume this is because the x-position is based off the size of a unit 
in the plot, which changes when i rescale.

Can i get some pointers on how to adjust for this?

Thanks.