+With one option `-d` it also prints database id.
+
+
+Book search
+^^^^^^^^^^^
+
+Usage::
+
+ ml-search.py [-i/-I] [-t/-s/-f] books [-t title] [-s series] [-a archive] [-f file] [--surname name] [--name name] [--misc-name name] [--fullname name] [-e ext] [--gname name] [--gtitle title] [-l lang]
+
+Search and print a list of books by title, series, archive or file name.
+
+Options::
+
+ -t, --title title Search by title
+ -s, --series series Search by series
+ -a, --archive archive Search by archive (zip file)
+ -f, --file file Search by file name (without extension)
+ --surname surname Search by author’s surname
+ --name name Search by author’s name
+ --misc-name misc. name Search by author’s misc. name
+ --fullname name Search by author’s full name
+ -e, --ext ext Search by file extension
+ --gname name Search by genre’s name
+ --gtitle title Search by genre’s title
+ -l, --lang lang Search by language
+
+By default the program prints only titles of the found book. With one
+option `-d` it also prints database id, 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. 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.
+
+