> not text, they are data You can be both . . . IMO, all the fields need to have a Printable and Readable trait (or whatever Rust's version of those are). If

> not text, they are data You can be both . . . IMO, all the fields need to have a Printable and Readable trait (or whatever Rust's version of those are). If you want to do special things for certain fields to make them easier to work with, I think that's cool too. But if you force people not to treat headers as text, I think you're going to have a problem.