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	diff --git a/lib/libc/stdlib/ptsname.3 b/lib/libc/stdlib/ptsname.3
	--- a/lib/libc/stdlib/ptsname.3
	+++ b/lib/libc/stdlib/ptsname.3
	@@ -29,7 +29,7 @@
	.\" NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	.\" SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	.\"
	-.Dd October 17, 2020
	+.Dd October 14, 2023
	.Dt PTSNAME 3
	.Os
	.Sh NAME
	@@ -104,7 +104,7 @@
	for the master device specified with
	.Fa fildes .
	.Sh RETURN VALUES
	-.Rv -std grantpt ptsname_r unlockpt
	+.Rv -std grantpt unlockpt
	.Pp
	The
	.Fn ptsname
	@@ -112,6 +112,19 @@
	of the slave device on success; otherwise a
	.Dv NULL
	pointer is returned.
	+.Pp
	+The
	+.Fn ptsname_r
	+function returns the value 0 if successful;
	+otherwise a nonzero value is returned and the global variable
	+.Va errno
	+is set to indicate the error.
	+Note:
	+.Fn ptsname_r
	+was previously documented as returning -1 on error.
	+In the future it will be changed to return an error number, for POSIX
	+compatibility.
	+Therefore, callers should not check for -1.
	.Sh ERRORS
	The
	.Fn grantpt ,