It's section 3 page, not section 2. While here, xref puffs(3) in the

SEE ALSO section too.

lib/libperfuse/libperfuse.3

@@ -1,4 +1,4 @@
-.\" $NetBSD: libperfuse.3,v 1.5 2016/10/18 22:26:13 wiz Exp $
+.\" $NetBSD: libperfuse.3,v 1.6 2019/01/23 19:43:49 uwe Exp $
 .\"
 .\" Copyright (c) 2010 Emmanuel Dreyfus. All rights reserved.
 .\"
@@ -23,8 +23,8 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd August 12, 2010
-.Dt LIBPERFUSE 2
+.Dd January 23, 2019
+.Dt LIBPERFUSE 3
 .Os
 .Sh NAME
 .Nm perfuse_mount ,
@@ -130,6 +130,7 @@ bytes, which is enough to queue 16 FUSE packets of maximum 132 kB length.
 .Xr df 1 ,
 .Xr mount 2 ,
 .Xr open 2 ,
+.Xr puffs 3 ,
 .Xr mount 8 ,
 .Xr perfused 8
 .Sh AUTHORS