'What’s more surprising is that, of all the online search experiments that took place during this period – including commercially focused search systems like Lockheed’s Dialog, which has since become an enterprise product – SUPARS mimicked contemporary web search more closely than any other, prefiguring several primary features of web-search protocols we rely on more than 50 years later.'

https://aeon.co/essays/the-1970s-librarians-who-revolutionised-the-challenge-of-search