+None known, probably many. Valgrind does not complain though.
+
+.SH "WISH LIST"
+
+The format of the output should definitely be improved. Not clear how.
+
+The comparison algorithm could maybe be improved with some MD5 kind of
+signature. However, most of the time is taken by comparison for
+matching files, which are required even when using a hash.
+
+Their could be some fancy option to link two instances of the command
+running on different machines to reduce network disk accesses. Again,
+this may not help much, for the reason given above.
+
+.SH "EXAMPLES"
+
+.B finddup -p0d blah
+
+.fi
+List duplicated files in directory ./blah/, show a progress bar,
+ignore empty files, and ignore files and directories starting with a
+dot.
+
+.P
+.B finddup sources not:/mnt/backup
+
+.fi
+List all files found in \fB./sources/\fR which do not have
+content-matching equivalent in \fB/mnt/backup/\fR.
+
+.P
+.B finddup -g tralala cuicui
+
+.fi
+List groups of files with same content which exist both in
+\fB./tralala/\fR and \fB./cuicui/\fR. Do not show group IDs, instead
+write an empty lines between groups of files of same content.