I've rewritten the abstract of SRFI 181 (custom ports) to refer to SRFI 79, and the abstract of SRFI 186 (transcoded ports) to refer to SRFIs 80 and 81.  No need for new drafts just for that, I think.

On Sat, Mar 14, 2020 at 1:32 PM Lassi Kortela <xxxxxx@lassi.io> wrote:
We should document the relationship between SRFI 80 (Stream I/O) and 186.

https://srfi.schemers.org/srfi-80/srfi-80.html