+Store temporary staging files in a subdirectory of the directory \fIDIR\fR.
+Only valid for \fB@IMAGEX_PROGNAME@ mountrw\fR.
+.TP
+\fB--unix-data\fR
+By default, \fB@IMAGEX_PROGNAME@ mount\fR and \fB@IMAGEX_PROGNAME@ mountrw\fR will ignore both
+Windows-style security descriptors (which may have been set either from Windows or by
+\fB@IMAGEX_PROGNAME@ capture\fR from a NTFS-volume) and UNIX-specific data (which is from using
+\fB@IMAGEX_PROGNAME@ capture\fR with the \fB--unix-data\fR flag). In this default mode,
+all files will simply be owned by the user running \fB@IMAGEX_PROGNAME@\fR and will have mode 0777.
+(Note: they will still not be accessible to other users unless you also specify
+\fB--allow-other\fR.) If you instead provide the \fB--unix-data\fR flag, these
+default permissions will be overridden on a per-file basis with the
+UNIX-specific data when available, and in the case of \fB@IMAGEX_PROGNAME@ mountrw\fR it
+will be possible to change the UNIX permissions using the standard UNIX
+tools and functions.
+.TP
+\fB--allow-other\fR
+Pass the \fBallow_other\fR option to the FUSE mount. See \fBmount.fuse\fR (8).
+Note: to do this is a non-root user, \fBuser_allow_other\fR needs to be
+specified in /etc/fuse.conf (with the FUSE implementation on Linux, at least).