diff --git a/share/man/man5/intro.5 b/share/man/man5/intro.5
index 1c746f37a39..60328a4bed0 100644
--- a/share/man/man5/intro.5
+++ b/share/man/man5/intro.5
@@ -35,7 +35,16 @@
 .Nm intro
 .Nd introduction to file formats
 .Sh DESCRIPTION
-This section contains information about file formats.
+This section contains information about file formats, including:
+.Pp
+.Bl -bullet -compact
+.It
+ASCII configuration and resource files
+.It
+System binary file and stream structures
+.It
+Composition of database files
+.El
 .Sh FILES
 .Bl -tag -width "/usr/local/etc/" -compact
 .It Pa /etc/