+.SH DATA AND METADATA SUPPORT
+This section documents which WIM features are exposed via the mount support and
+which are not.
+.PP
+The following features are \fIsupported\fR (read/write unless otherwise
+specified):
+.IP \[bu] 4
+Hard links
+.IP \[bu]
+Symbolic links. Native Windows symbolic links and junctions in a
+mounted WIM image will automatically be translated into UNIX symbolic links,
+potentially with their targets fixed to be valid given the actual mountpoint
+directory. UNIX symbolic links created in a read-write mounted WIM image will
+automatically be translated into native Windows symbolic links.
+.IP \[bu]
+Named data streams (mostly). See the \fB--streams-interface\fR option.
+.IP \[bu]
+Standard UNIX permission bits and UNIX special files are supported if the
+\fB--unix-data\fR option is used.
+.PP
+The following features are \fIunsupported\fR:
+.IP \[bu] 4
+Windows security descriptors. These are not exposed in the mounted filesystem,
+although existing values will be preserved on commit. New files are not given
+security descriptors.
+.IP \[bu]
+DOS names (8.3 names) (short names). These are not exposed in the mounted
+filesystem, although existing values will be preserved on commit. New files are
+not given DOS names.
+.IP \[bu]
+Windows file attributes. These are not exposed in the mounted filesystem,
+although existing values will be preserved on commit. New files are assigned
+default attributes based on the UNIX file mode bits.
+.IP \[bu]
+EFS-encrypted files. The files themselves will be visible in mounted WIM images
+but their data will not be available.