And didja know: .docx files are actually .zip files, with the various pieces that make up a word doc stored internally as various data and xml files. Rename them to .zip and you can open them up and take a look.
Might be useful info if a docx file were ever to get badly corrupted and you wanted to try and salvage anything of value.
Another interesting idea I've had is to smuggle other files inside these .docx zips, but I'm not sure if Word performs content/integrity checking on the files at some point.
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-Scott
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