The extension ``%S'' cannot be used without supplying a <savetype>. Use either |.xhtml|, |.xhtm|, |.html|, |.htm| or |.txt| as a file extension, or supply <savetype>.
如果不提供 <savetype>，就不能使用扩展名“%S”。使用 |.xhtml|、|.xhtm|、|.html|、|.htm|或 |.txt|作为文件扩展名，或提供 <savetype>。