You have the Oregon? I used to have one of those... The Edge is kind of similar, but doesn't let you touch a data field and then choose what to replace it with; there's a setup menu for the "training page" where you set each of them. With the Oregon, I found I'd change fields all the time without realizing it if I forgot to lock the screen, and I suspect this is why the Edge is a little more cumbersome for setting things up. But the menu where you do this doesn't have a setting for the elevation plot - well, it does, but it only lets you decide whether this page shows up at all.

Thanks for the suggestion, though!