Ah I see, I misunderstood. I just tried the latest classic version and it was all mouse. I agree then that it's disappointing as someone who has played both versions
35 karma · joined March 11, 2021
[1] https://www.bay12games.com/dwarves/
[2] https://store.steampowered.com/app/975370/Dwarf_Fortress/
Keeping the file wider than it is long is a simple heuristic to make sure files don't grow out of their original scope and are instead split up based on separation of concerns, without just picking some arbitrary line number.