title: What is the format of `*.ni.dll.aux` files?
body: <p>What is the format (data layout) of <code>*.ni.dll.aux</code> files found in <code>C:\Windows\assembly\NativeImages_v4.0.30319_64</code>? I understand that these are auxiliary files generated by <code>ngen.exe</code>. What data do they contain? </p>