ftp.nice.ch/pub/next/tools/screen/Background.3.2.NIHS.bs.tar.gz#/Background3.2/Source/background/background_main.m

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#import "BackgroundCLI.h"

void main(int argc, char *argv[])
{
    [BackgroundCLI new];
    [NXApp free];
    exit(0);
}

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