A true "Curves" control is not generally available in Elements, but you can download and use an Action for it. It's not a fixed Curves setting, it's the same Curves that's available in full PS. Elements actually has a Curves control, but it needs to be brought into operation by an Action (oddly enough). There are several other features of Elements that are, normally, hidden but there are ways and means of using them. One of the best set of tools can be found at
Elements+.
All Actions, of course, have to be written in full PS/CS...... they're just like macros, or scripts, as
Chris P says. Other really useful ones include a quick way to make a Layer Mask and ways to mask highlights or shadows (so you can adjust them with one of the other tools).