With the extension COD, the word processor Atlantis Word Processor marks documents in their own, proprietary format, which have been encrypted by the software using an AES algorithm.
These files include text, formatting instructions, images, graphics, fonts, indexes, and layout information. But they can only be opened with the correct password.
Atlantis Word Processor does not write any data to the hard disk when a COD document is open. The data remains in RAM only and is lost when the computer is turned off.