I love the idea of a physical device (esp. with buttons) but I get that it is not always practical. I wonder how much work it would take to add math symbols to

I love the idea of a physical device (esp. with buttons) but I get that it is not always practical. I wonder how much work it would take to add math symbols to something like Touch Portal. I haven't used it but read that many people do for controlling various software, including DAWs (which can be latency-sensitive). https://www.touch-portal.com/ https://www.touch-portal.com/