What.s the .bin file in a created test?

One of the requirements of most government contracts is open architecture delivery. I am tasked for writing a lifecycle maintenance guide explaining what each kind of file in the directory structure is. There's a .bin file that was created as part of the Lectora test, and I at least have to speak to what it does since it shows up in the files that will be delivered. Can anyone help me?(I hope that the file doesn't mean that our file delivery really isn't open architecture....)Thanks in advance.

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