-s to read passphrases from stdin can indeed be used for creation.
OK jmc
-.\" $OpenBSD: bioctl.8,v 1.110 2022/08/26 09:14:00 kn Exp $
+.\" $OpenBSD: bioctl.8,v 1.111 2023/07/06 21:08:50 kn Exp $
.\"
.\" Copyright (c) 2004, 2005 Marco Peereboom
.\"
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
-.Dd $Mdocdate: August 26 2022 $
+.Dd $Mdocdate: July 6 2023 $
.Dt BIOCTL 8
.Os
.Sh NAME
.Pa /dev/stdin
rather than
.Pa /dev/tty .
-This option cannot be used during the initial creation of the crypto volume.
.El
.Sh EXAMPLES
Configure a new