Hello, It looks like the link to the reference implementation (which is in the text body of the SRFI, not on the github repository) is broken.
http://www.het.brown.edu/people/andre/macros/index.htm It seems to be available through archive.org, https://web.archive.org/web/2019*/http://www.het.brown.edu/people/andre/macros/index.htm https://web.archive.org/web/20190211120127/http://www.het.brown.edu/people/andre/macros/index.htm Perhaps it would be nice to change the link in the SRFI to the archive.org page -- or bring the implementation in archive.org into the github repository? J.
