[R] label option in 'barplot'?

[Justin Gengler]

Hello all,

When using the 'barplot' function, how would one go about creating 
labels on the top of the bars corresponding to the actual frequency 
values (i.e., the height of the bar).  For histograms, one can use 
the 'LABEL=T' parameter to this effect, but it is not available for 
barplot.  Must one manually create such labels for a barplot (perhaps 
using mtext)?

Thanks.

Justin Gengler