I would love to be proven that I'm wrong, but I don't think they allow for bidirectional, lossless conversion, namely graph -> text and text -> graph? Do they?

I would love to be proven that I'm wrong, but I don't think they allow for bidirectional, lossless conversion, namely graph -> text and text -> graph? Do they? If so, then you are right, the statement is wrong and we will change it on our website.