# File lib/mizuho/utils.rb, line 52
        def title_to_docid(title)
                chapter, pure_title = extract_chapter(title)
                p title
                numbers = chapter_to_int_array(chapter)
                result = 0
                bit_offset = 0
                numbers.each do |num|
                        result = result | (num << bit_offset)
                        bit_offset += 5
                end
                return result
        end