refer(1) on Linux
The text 8440b7276a88, as Debian 13 (Trixie) shipped it.
process bibliographic references for groff
Flags it lists
-
-B -
-C -
-P -
-R -
-S -
-a -
-b -
-c -
-e -
-f -
-i -
-k -
-l -
-n -
-p -
-s -
-t