If you are makign an anim that you are gonna type a lot on, for example a storytime or contest, before posting the anim you will make for storytime, etc. Make a private anim and type it all there, so you can copy the text, and then post the story time, etc, anim and paste it on there so the people wanting to see the storytime, dont have to wait 10 minutes for you to type all that! For example, I used the private anim so you wouldnt have to wait a long time!