1、有扩展名的文件会自动用设置好的程序（如有）去尝试打开，您也可以右击文件，选择“打开方式”用其它程序来尝试打开。
2、文件扩展名可以人为设定，扩展名为AAC的文件有可能是音频文件，也可能是其它。用户在打开文件时请确认来源，不要随意打开未知文件。
3、.ofx文件类型：Open Financial Exchange File扩展名为.ofx的文件是一个数据文件。
4、文件说明：Financial data format standardized by Intuit, Microsoft, and CheckFree in 1997; created as an open format for transferring financial data between multiple systems over the Internet; formatted using an SGML specification that can be used by any financial institution or vendor.When it was introduced in 1997, the Open Financial Exchange (OFX) format replaced the Open Financial Connectivity (.OFC) format used by Microsoft
5、Money..ofx 打开.ofx文件Mac OSIntuit QuickenReilly Technologies MoneydanceGnuCashApple Numbers
6、WindowsIntuit QuickenMicrosoft MoneySage AccpacReilly Technologies MoneydanceGnuCash LinuxKMyMoneyGnuCashReilly Technologies Moneydance
