<term><option>--overlay=</option></term>
<term><option>--overlay-ro=</option></term>
- <listitem><para>Combine multiple directory trees into one
- overlay file system and mount it into the container. Takes a
- list of colon-separated paths to the directory trees to
- combine and the destination mount point.</para>
-
- <para>Backslash escapes are interpreted in the paths, so
- <literal>\:</literal> may be used to embed colons in the paths.
+ <listitem><para>Combine multiple directory trees into one overlay file system and mount it into the
+ container. Takes a list of colon-separated paths to the directory trees to combine and the
+ destination mount point.</para>
+
+ <para>Backslash escapes are interpreted in the paths, so <literal>\:</literal> may be used to embed
+ colons in the paths.</para>
+
+ <para>If three or more paths are specified, then the last specified path is the destination mount
+ point in the container, all paths specified before refer to directory trees on the host and are
+ combined in the specified order into one overlay file system. The left-most path is hence the lowest
+ directory tree, the second-to-last path the highest directory tree in the stacking order. If
+ <option>--overlay-ro=</option> is used instead of <option>--overlay=</option>, a read-only overlay
+ file system is created. If a writable overlay file system is created, all changes made to it are
+ written to the highest directory tree in the stacking order, i.e. the second-to-last specified.
</para>
- <para>If three or more paths are specified, then the last
- specified path is the destination mount point in the
- container, all paths specified before refer to directory trees
- on the host and are combined in the specified order into one
- overlay file system. The left-most path is hence the lowest
- directory tree, the second-to-last path the highest directory
- tree in the stacking order. If <option>--overlay-ro=</option>
- is used instead of <option>--overlay=</option>, a read-only
- overlay file system is created. If a writable overlay file
- system is created, all changes made to it are written to the
- highest directory tree in the stacking order, i.e. the
- second-to-last specified.</para>
-
- <para>If only two paths are specified, then the second
- specified path is used both as the top-level directory tree in
- the stacking order as seen from the host, as well as the mount
- point for the overlay file system in the container. At least
- two paths have to be specified.</para>
+ <para>If only two paths are specified, then the second specified path is used both as the top-level
+ directory tree in the stacking order as seen from the host, as well as the mount point for the
+ overlay file system in the container. At least two paths have to be specified.</para>
<para>The source paths may optionally be prefixed with <literal>+</literal> character. If so they are
taken relative to the image's root directory. The uppermost source path may also be specified as an