infoctrs.h2 vs infoctrs.h2_

what is difference between infoctrs.h2 (asked during installation of IIS) that I have no, and infoctrs.h2_ that I see in C:\i386?
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rindiConnect With a Mentor Commented:
Files that end with an underscore are usually compressed versions of the file.
mikesmAuthor Commented:
I pointed to infoctrs.h2_ in the installer's request of infoctrs.h2 and it was accepted. I completed reinstallation of IIS successfully. But I'm still wondering if these files are the same (just differently named)?
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