Brought a smile to my face. I see this as a shibboleth for the oldschool coders.

For those missing the joke, that's the assembly language commands to switch to VGA mode from DOS. Set AX register to 13 hex and call interrupt 10. That gives us VGA graphics mode 320x200 pixels! Related: In the 1990s Michael Abrash via Dr. Dobbs Magazine, introduced the world to "Mode X" @ 320x240, which had the advantage of square pixels. That series of articles was responsible for my long-standing subscriptions to Dr Dobbs Journal.