Good way to see graph Xwaves

Is there a good way to see what Xwaves are plotted on in a Graph? I easily lose track on graph with multiple traces plotted on different Xwaves in a same graph, especially when coming back visiting an old experiment. I can find out the Y waves by double left click, but what would be a good way to find out which are the Xwaves? Thanks!
On the Graph Menu select "Show Trace Info Tags" or use the key short cut. On the Mac, hold down Command & Option & Control and the cursor will change to a question mark with in a callout box. Then click on the wave and you will get an info box with the Y wave X Wave and axis. This is a temporary wave to toggle the trace if on.

I do not know the Windows key combo, but there is surely one.