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oop( \%actions )

SDLx::App::loop is a simple event loop method which takes a reference 
+to a hash of event handler subroutines. The keys of the hash must be 
+SDL event types such as SDL_QUIT(), SDL_KEYDOWN(), and the like. When
+ called, the event method recieves as its parameter the event object 
+used in the loop.
...
    );
    
    $app->loop( \%actions );