plotting values into charts?

[Uwe Dippel <udippel gmail com>]

I read the archives and the manual, but could not find an answer:
When I plot a graph (let's say X-Y) with a small number of values
connected with some line; how I can plot/print the values (of Y) next
to the data points? So that the reader doesn't have to 'guess' the
values from the Y-axis?

Thanks,

Uwe