Letterlocking

Letterlocking is like a super-secret way to fold and seal a letter without using an envelope. Think of it as a puzzle! You fold a piece of paper, like parchment or papyrus, in a special way and then maybe cut it or tuck it so it stays shut. It was a clever trick used a long, long time ago to keep messages private, like a secret handshake for letters!

This amazing way of folding letters started way back in the 1200s, which is over 800 years ago! That's older than many castles! It became popular when people started using a new kind of paper that was bendy and easy to fold. Before this, messages were often written on thicker materials that weren't as good for clever folding tricks. So, letterlocking is a pretty old invention!

Letterlocking was super important because it helped keep secrets safe! Imagine you had a very important message to send, maybe a secret plan or a private thought. You wouldn't want anyone else to read it before it got to your friend, right?

Letterlocking made sure that if someone tried to open the letter, they would mess it up, showing everyone that it had been read. It was like a security guard for your words!

To letterlock a letter, you fold it in a very specific pattern. Sometimes, you might even make a tiny cut in the paper and fold a flap through it to keep it closed. It's like folding a treasure map so it stays tucked away.

The folds themselves create a kind of lock. If you wanted to read the letter, you had to carefully unfold it, and if you did it wrong, you might tear the paper, giving away that you snooped!