+downloaded_file_t downloaded_file (downloaded_file_t, const char *);
+
+void register_download (const char *, const char *);
+void register_redirection (const char *, const char *);
+void register_html (const char *, const char *);
+void register_delete_file (const char *);
+void convert_all_links (void);
+void convert_cleanup (void);