> You can package (rnrs flonums) and (srfi 144) once and for all with
the sample implementation, though. In any case prefixing is not enough
for R6, because there are names in (srfi  276 *) that aren't present in
(rnrs flonums), and R6RS requires that (rnrs *) libraries export exactly
the listed names, neither more nor less.

I meant using the same body of code, for instance with `include`. One
could then write carefully and be portable to all three.

I've decided to keep the ":" prefixes.

-- Peter McGoron