[R] rotating points on a plot

[Richard E. Glor]

Anybody know how to rotate shapes generated with the 'points'  
function?  I'm trying to place points around a radial diagram such  
that the y-axis of individual shapes are oriented with the radii of  
the circle rather than the y-axis of the larger plot area.  Perhaps  
something analogous to the 'srt' and 'crt' functions for text that  
appear under 'par'?

Thanks,
Rich