Trying to make an ASCII UI based game

Hi, I'm developing a simulation game where the whole UI is made of ASCII characters. We want all the characters to be inside some kind of characters grid and I'm struggling to figure out how to do it. I've thought of programming a 2-dimensional char array manually and printing the result into a TextMeshPro each iteration. But that solution has some (solvable) problems like having to program the navigation between options manually. An approximate example of what we are looking for is the Superhot's menu: ![alt text][1] I've searched for this but I haven't found anything. Is there a more efficient way of doing this? [1]: https://steamuserimages-a.akamaihd.net/ugc/308865366720311007/AA72E172544688E73079D90AF0403509F7187D30/