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Hi there,
So I spent some time looking at this during the week and unfortunately it's not doable without a lot of time. I put in a hacky version and it broke a lot of things. The project just wasn't designed with that in mind, and there are a lot of edge cases. It's designed to be a bit like a BBS door, not actually being one.
I'd have to totally re-write all the text display and word wrap features and even once it's done that'd take a lot of testing and debugging to find all the things it broke.
Part of me wants to write a framework that does all this and where the game logic then sits in a scripting language (it's probably obvious than 90% of this game is hard-coded in C++) but it's just not a project I have the motivation or time for right now. Apologies.