For those wondering why OP linked to the first part of the history page instead of the main page, the history is indeed one of the distinguishing features of Hangul.<p>It's one of the few writing systems currently in use that was deliberately designed, instead of occurring naturally over time. This means that any similarities and relationships between symbols that you might find are probably intended, not accidental. Noticing these similarities is key to quickly learning Hangul, as it greatly reduces the number of distinct patterns you need to memorize. It's also fun for programmers who like puzzles. :)