A permanent documentation file was the Cardassian equivalent of a captain's log. The main difference was that a captain's log could be erased if the officer so chose, whereas a permanent documentation file was rather permanent. Dukat kept such a file aboard Terok Nor. (DS9: "A Time to Stand")
- "Permanent Documentation File, Dukat, S.G. The war continues to go well. Each day brings reports of new victories. It's only a matter of time before the Federation collapses and Earth becomes another conquered planet under Dominion rule. All in all, it's a good time for Cardassia...and the Dominion."