123 Charting - determine the X value of a datapoint

In Lotus 123, I'm trying to determine how you can click on a point in
a data series (assuming a $line chart), or even better anywhere in the
chart, and find out what the value of the X and Y are. In Excel you
can do this either by holding the cursor over a point, or by the
various methods Jon Peltier has been talking about in this group.
Thank you for your help.
Robert Harley.