Since i’m not a coder iI’m not certain how things work under the hood but what I ususally do is iether swipe to the left or right or if using a bluetooth enabled typing keyboard I use the arrow keys. Most upps I have noticed have at least one or two usually more unlabeded buttons. So what I hear is most often button or sometimes button unlabed when I encounter those. I have never encountered buttons like what you have on the babs portion of the app that has graphics called out. so I don’t know what the graphics sybmbolize. Let me know if this feedback is of any use.