Each token likely maps to a particular attribute:
The string is a coded identifier used by Microsoft to specify the exact build and configuration of the installer: ces-x64frev-en-us-dv9
This article provides a deep dive into what this file is, what the specific components of its name mean, and how to utilize it effectively. What is ces-x64frev-en-us-dv9 ? Each token likely maps to a particular attribute:
2.4 "en-us"
DVD 9—this denotes the medium size, usually indicating a large ISO file containing multiple editions of the product. Contextual Usage Contextual Usage If you're a Windows enthusiast or
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: Stands for "Free" (the standard retail/final version, as opposed to a "Checked" or debug build). : The language code for English (United States).