Scheme Request for Implementation 195,
"Multiple value boxes,"
by Marc Nieper-Wißkirchen,
is now available for discussion.

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Here's the abstract:

This SRFI extends the specification of the boxes of SRFI 111 so that they are multiple-values aware.  Whereas a SRFI 111 box is limited in that it can only box a single value, multiple values can be boxed with this SRFI.


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