The command_line command may be used to pass command line arguments to the ebook2cw utility if used.

require 'cw'

cw do
   use_ebook2cw
   book_name      'Jekyll_and_Hyde.txt'
   author         'Robert Louis Stevenson'
   book_dir       './books'
   audio_filename 'book.mp3'
   audio_dir      './audio'
   wpm            18
   command_line   '-Q 5'
   convert_book
end
Tags: commands