ftp.nice.ch/Attic/openStep/developer/examples/WhatButton.2.0.w.I.b.tgz#/WhatButton.2.0/Source/WhatButton_main.m

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#import <AppKit/AppKit.h>

int main(int argc, const char *argv[]) {
   return NSApplicationMain(argc, argv);
}

These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.