Ok so I got a drawing tablet for Christmas. Everything was going smoothly until I hit the selection button to increase the size of something. NOW I CANT UNSELECT IT AND IM SCREAMING. ALL I WANT IS TO UNSELECT IT AND I CANT. IVE LOOKED STUFF UP ABOUT IT AND NOTHING IS HELPING. If you would like to help me, please comment something on this part of the story. Thanks.
P.s. I use Paint Tools SAI
Edit: I fixed it