MobileApps-What does ‘abc’ do 2fmean on the community feed po

This appears on all iOS devices but it works only on devices that have a phone. On the phone, the “abc” buttons open or closes the keyboard in order to show any pictures that may have been added. On the ipad, it currently doesn’t do anything but is still displaying on the screen. If using an iPad, you can simply ignore the ‘abc’ button.