+.PP
+To print the one-line global summary instead, use
+.IP
+ $ adu --select --database-dir /root/adu-var --select-options '--select-mode global_summary'
+.PP
+To sort the user summary by file count rather than by file size, run
+.IP
+ $ adu --select --database-dir /root/adu-var --select-options '--list-sort=file_count'