Encrypted archive created by CenturionMail, a program used for encrypting emails and attachments; uses both compression and encryption as well as a password that is required to extract the archive.
CEF files are used for securely sending files over email. You need the CenturionMail software in order to open them.
NOTE: By default, CenturionMail creates archives with the .ZIP, .CAB, or .EXE extensions. However, you can also use the "Custom File Extension" option to create CEF files.
File created by the Elementary Edition of Class Action Gradebook, a program used by teachers for recording elementary school grades; saves the classroom roster and assignments as well as evaluated scores; can be used for generating report cards.
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