THE CODE THAT LIVED IN MY HEAD RENT FREE FOR 30 YEARS

Summary from the TLDR Web Dev newsletter

This developer encountered a Pascal code snippet for disk parking at a young age but couldn't understand it. The code was filled with seemingly arbitrary numbers and letters and it frustrated the developer. Upon revisiting it decades later, the developer realized that the code was essentially just invoking a system call, using registers and arguments specific to the BIOS. It goes to show how experience and knowledge gained in the field can often be subtle but dramatic in approaching complex code and situations.