Search and print a list of authors whose surname starts with "duck", and
name starts with "mack", case insensitive.
+
Book search
^^^^^^^^^^^
By default the program prints only titles of the found book. With one
option `-d` it also prints the list of authors and genres, and also
series the book belongs to (if any) and the serial number of the book in
-the series.
+the series. With two options `-d` (`-d -d` or simply `-dd`) it also
+prints the file date and language. With three `-d` it prints archive
+name, file name, extension and size, and flag if the book is marked to
+be deleted.
+
Extension search
^^^^^^^^^^^^^^^^
Search and print a list of extensions by name.
+
Genres search
^^^^^^^^^^^^^
-n, --name name Search by name
-t, --title title Search by title
+
Language search
^^^^^^^^^^^^^^^