The More You Know: Microsoft and "1033" (Martin Gordon's Blog (cptncelchu)) by Martin
I've seen the number in various install directories for Microsoft products. This shot of a Windows Vista retail box shows the very special number in the URL in the 2nd paragraph and my interest was suddenly rekindled.
According to this MSDN blog, the number is the local identifier for "English (United States)" based on a formula described in the post.
So there you have it…
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