Purpose of "$Id: ..." line in the header of source files

Posted by Mustafa on Stack Overflow See other posts from Stack Overflow or by Mustafa
Published on 2010-05-04T05:46:48Z Indexed on 2010/05/04 5:58 UTC
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/* $Id: file.c,v 1.0 2010/09/15 01:12:10 username Exp $ */

I find this line in many source code files in the comment at the top (header) of the file. Why? Is it aimed for the version control software? -Thanks.

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