PS pen with a good description points out how to dig out?

Cutout after using a pen into a constituency, but delayed the opening, I just use a pen to trace the box, the picture is not drag, how are you going?

you choose the wrong tool! Cutout can use magnetic lasso or magic wand tools to compare the application, but can not drag constituency, you can only copy or cut using a tool box in the trailer instead of mobile tools.Constituency after the establishment of a good tool to be able to choose mobile You have to remove the constituency