Lets you specify the name of the current layer. The name can also hold important information about how to interpret a possible animation of the layers (e.g. if you save the image as a GIF you can set options about how to play the animated GIF).
The animation attributes is specified as follows. Layer_Name (delay in ms) (combination_mode) e.g. Frame_1 (100ms) (replace)
The delay will specify the time each frame is visible in the animation. A delay of e.g. hundred milliseconds will have the following format: (100ms).
The combination mode will specify if you will combine with the previous layer or replace it. The two modes are either (combine) or (replace).