+The following is an example of some data this script might parse.
+
+ #define length_trivial_usage \
+ "STRING"
+ #define length_full_usage \
+ "Prints out the length of the specified STRING."
+ #define length_example_usage \
+ "$ length Hello\n" \
+ "5\n"
+
+Each entry is a cpp macro that defines a string. The macros are
+named systematically in the form:
+
+ $name_$type_usage
+
+$name is the name of the applet. $type can be "trivial", "full", "notes",
+or "example". Every documentation macro must end with "_usage".
+
+The definition of the types is as follows:
+
+=over 4
+
+=item B<trivial>
+
+This should be a brief, one-line description of parameters that
+the command expects. This will be displayed when B<-h> is issued to
+a command. I<REQUIRED>
+
+=item B<full>
+
+This should contain descriptions of each option. This will also
+be displayed along with the trivial help if CONFIG_FEATURE_TRIVIAL_HELP
+is disabled. I<REQUIRED>
+
+=item B<notes>
+
+This is documentation that is intended to go in the POD or SGML, but
+not be printed when a B<-h> is given to a command. To see an example
+of notes being used, see init_notes_usage in F<usage.h>. I<OPTIONAL>
+
+=item B<example>
+
+This should be an example of how the command is actually used.
+This will not be printed when a B<-h> is given to a command -- it
+will only be included in the POD or SGML documentation. I<OPTIONAL>