Following up on the discussion of a Superseded keyword for SRFIs (see https://srfi-email.schemers.org/srfi-121/msg/11651313), I'm announcing the addition of a new Superseded keyword for SRFIs, per Shiro Kawai's suggestion.

SRFIs that have been withdrawn in favor of newer, replacement SRFIs will now be given the Superseded keyword so that they will be easier to find. Currently, we have four:

https://srfi.schemers.org/?keywords=superseded

As before, the See-also links between SRFIs will also be present, not only for Superseded-by relationships, but for others as well.

I suspect that I haven't found all the cases where one SRFI has been withdrawn in favor of another. If you would like to nominate one, especially if you are its author, please let me know.