文件类型及文件扩展名( file extension) Proiect OPJ It cannot save as template graph Worksheet OGW Template extension is oTw Excel Workbook XLS It cannot save as template Layout page—OTP * t cannot save as file Matrix OGM Template extension is otm Function Graph OGG Template extension is oTP Notes- TXT It cannot save as template 主讲:王雅琼主讲：王雅琼 文件类型及文件扩展名（file extension） ➢ Project —— OPJ  It cannot save as template Graph ➢ Worksheet —— OGW  Template extension is OTW ➢ Excel Workbook —— XLS  It cannotsave as template Layout Page —— OTP  It cannotsave as file Matrix —— OGM  Template extension is OTM Function Graph —— OGG  Template extension is OTP Notes —— TXT  It cannotsave as template