Keyboard on CP400 emulator

So… I’m new to the whole ‘calculator’ world. But I do love tinkering with things and a bit of programming. I’ve downloaded the CP400 emulator and I’m working through bits of the comparison Casio put together showing how much easier their way of doing things is than HP’s (lol). But I’m stuck on the ‘areas between two curves’ example because where it says press the ‘right arrow’ key to move from one intersection point to the other, I can’t find that key (!). I’m using the emulator on an iPhone. Can someone point me in the right direction? If I get through the exercises I’d seriously consider buying the physical device, mainly to do Python…
Doh! I found it! Seriously I thought I’d stabbed at that button several times without anything happening Onwards and upwards!