pref_category_general_key
pref_category_reader_key
pref_category_accounts_key
pref_category_downloads_key
pref_category_advanced_key
pref_category_about_key
pref_library_columns_dialog_key
pref_library_columns_portrait_key
pref_library_columns_landscape_key
pref_default_viewer_key
pref_hide_status_bar_key
pref_lock_orientation_key
pref_enable_transitions_key
pref_show_page_number_key
pref_keep_screen_on_key
pref_custom_brightness_key
pref_custom_brightness_value_key
pref_reader_theme_key
pref_download_directory_key
pref_download_slots_key
pref_clear_chapter_cache_key
pref_clear_database_key
pref_version
pref_build_time