It is a Team Manager Meet Event File and usually, files with this extension are files created by the software HY-TEK Team Manager, which is a software or program used for events like sports. The files that are usually created using the software are databases or list of participants and all information that can be used to host sporting events. All these files are obviously .ev3 files. 

It is described as an Everlock Options File type. These are settings files mainly used by Everlock, software created by Az-tech software (although it is no longer supported by the company at present) aimed for the protection of media materials such as discs, etc. The software can best be defined as software for the management of licenses. All the files that are used in the Everlock software functions and settings are using .ev3 extension.

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