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TashinV from "Mac Developer Agreement"
An Application may install or run additional interpreted or executable code (e.g., plug-ins and extensions) for use in conjunction with the Application as long as such code:
does not change the Application’s submitted binary or would not otherwise be considered an Update (as determined in Apple’s sole discretion); and
does not change the primary purpose of the Application by providing features or functionality that are inconsistent with the intended and advertised purpose of the Application as submitted to the Mac App Store.