This is a Text Dialog. If you go inside the project and click into the scratchy sprite you can change those dialogs to the one's you want to! If you write /w the letters color will be white, you can write "/col and a number" to choose a color. If you write /~ the letters will move like a wave, write it again to unwave it. If you write /# the letters will shake, write it again to unshake it.
Thanks to @griffpatch @griffpatch_tutor @griffpatch-academy for this amazing tutorial that helped me on a project I'm making.