🔗 In memory of the man who put red and green squiggles under words

Tony Krueger, whose contributions went largely unrecognized, passed away recently. He is best known for implementing the red and green squiggles in Microsoft Word that alert users to spelling and grammatical errors. These features transformed how people interacted with word processors, shifting from interruptive spell checks to an unobtrusive system that highlights mistakes as they occur. Krueger's work on various versions of Word helped pave the way for modern writing tools in nearly every application today. His innovative approach not only improved user experience but also earned him an unexpected moment of fame when Penn & Teller acknowledged his work. While often overlooked, Krueger's legacy continues to impact users across the globe every time they see a red squiggle beneath a misspelled word. The next time this happens, remember to thank Tony.

Tony also reverse-engineered and ported the game Chip’s Challenge to Windows, showcasing his technical prowess before his fame in word processing began.