File created by LEGO MINDSTORMS EV3, an application that enables you to build and program LEGO MINDSTORMS EV3 robots; contains program data such as images, sounds, and My Blocks that tell the robot what functions to perform; only exists inside .EV3 files, if exported it becomes an .EV3S file.
To create the EV3P file, simply click the “+” tab in the top-left of the Project screen in the application under the EV3 Project file tab and next to the wrench icon. When you click the wrench icon you will see a list of your EV3P program files.
To import the EV3P file, click the wrench icon in the top-left of the Project screen in the application, click
in the bottom of the window, navigate to your EV3S (the exported version of the EV3P file) file, select it, and click .