[plt-scheme] Is there a way to serialize/pickle MzScheme values?

Hi:

I've checked archives of past discussions and all the DrScheme manuals,
but I couldn't find any indication of a function or library to make
MzScheme data persistent, to a string or a file. Is there one? If not,
what would be involved to make it happen? I'm starting to study the
innards of MzScheme itself and might like to help out.

Thank you.

--- Sarino