Editing minutes accumulated while the file was open, the number of save generations, and revision-save IDs that mark distinct editing sessions.
What it does not
It survives saving but not export to PDF or a Google Docs round trip. Someone who knows the format can edit it, which is why the signals have to be checked against each other for combinations that cannot all be true.
How to get it
Upload the .docx to the analyzer. It reads the process record directly and reports each signal separately.
How long it survives
Inside the file until something strips it. Keep the original, not an export.
Why it matters
It is evidence the word processor wrote about you rather than evidence you wrote about yourself, and it is often the only process record that exists for older work.
Check the evidence in your own document
The analyzer reads the process record inside a .docx and reports each signal separately, with its limits stated.