With any format, one of the very first things it should contain is a file version number.

不管是何种格式，它首先应该包含的信息就是文件版本号。

youdao

Even the version number of the build is encoded within the file name or some folder structure.

就算构建的版本号码记录在文件名或者一些文件结构中也一样。

youdao

Every time a new version of a message flow or message set is added to the BAR file, the name of the recently added file appends with "_" (underscore) and the version number.

每次将消息流或消息组的一个新版本号添加到BAR文件中时，最近添加的文件的名称都会附加上“_”(下划线)和版本号。

youdao

The original version of this post stated that the new Free File AGI cap would slightly reduce the number of taxpayers eligible for the program.

FORBES: IRS Keeps Making It Hard For Middle-Class To E-File For Free