format.
"
+
+option "user-summary-sort" -
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"how to sort the user-summary"
+enum typestr="col_spec"
+values="name","uid","dir_count","file_count","size"
+default="size"
+optional
+details="
+ It is enough to specify the first letter of the column specifier,
+ e.g. \"--user-summary-sort f\" sorts by file count.
+"
+
+option "no-user-summary" -
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"do not print the user summary table"
+flag off
+
+
+option "user-list" -
+#~~~~~~~~~~~~~~~~~~~
+"how to print per-user directory listings"
+enum typestr="which"
+values="size","file_count","both","none"
+default="both"
+optional
+details="
+ Similar to the global directory listings mentioned above,
+ adu can print two directory listings per user. This option
+ controls which of the these should be printed.
+"
+option "no-global-summary" -
+#~~~~~~~~~~~~~~~~~~~~~~~~~~~
+"do not print the summary line"
+flag off
+
+option "global-list" -
+#~~~~~~~~~~~~~~~~~~~~~
+"how to print global directory listings"
+enum typestr="which"
+values="size","file_count","both","none"
+default="both"
+optional
+details="
+ By default adu prints two global directory listings: The
+ first prints the directory names ordered by the sum of the
+ sizes of the contained files while the second listing prints
+ them sorted by the number of files. This option can be used
+ to print only one or neither of these two listings.
+"
+option "print-base-dir" -
+#~~~~~~~~~~~~~~~~~~~~~~~~
+"whether to include the base-dir in the output"
+flag off
+details="
+ If this flag is given, all directories printed are prefixed
+ with the base directory. The default is to print paths relative
+ to the base dir.
+"