Olympus E-P3: Touch Screen Shutter Release Problem

I must have inadvertently changed a setting on my E-P3 and cannot figure out how to reset it back to the way it was:

The shutter release is set to touch screen, i.e. when I touch the screen, the picture should be taken. Instead, now when I touch the screen to take a picture, a vertical magnification scale appears on the right side of the screen and otherwise nothing happens. The only way I can take the picture is by depressing the shutter release button on the top. Does someone know what I need to do to not have that magnification scale show up every time I am trying to use the touch screen shutter release?

I probably did something stupid but I just can't figure out how to undo it. Thank you much for any assistance with this!