Once upon a time, there was a boy named Tom. Tom liked to write. He wrote on paper, on the wall, and even on the ground. One day, he saw a big network of lines on the wall. It looked like a spider web. Tom wanted to write on it, but he didn't know how.
Tom's friend, Sue, saw the big network too. Sue was good at writing. She took a pen and started to write on the network. Tom felt jealous. He wanted to write on the network too, but he didn't know how to do it like Sue.
Tom asked Sue to teach him how to write on the network. Sue said yes. They practiced writing on the network together. Soon, Tom was good at it too. They were both happy, and they wrote on the network all day. They were not jealous of each other anymore. They were best friends who loved to write together.
