virtual_oss(8) on FreeBSD
The text 5921b8a5e23b, as FreeBSD 15.0-RELEASE shipped it.
daemon to multiplex and demultiplex an OSS device
Flags it lists
-
-B -
-C -
-D -
-E -
-F -
-G -
-L -
-M -
-O -
-P -
-Q -
-R -
-S -
-a -
-b -
-c -
-d -
-e -
-f -
-g -
-h -
-i -
-l -
-m -
-p -
-r -
-s -
-t -
-w -
-x