This dialog appears when using the function Copy/cut Frames... from the menu Frame
Select whether you want to Copy or Cut a frame or a range of frames.
Define the affected frames at the Frame(s) range definition area.
The option Store in Brush copies the select frames to the brush so that you can continue using
it as a brush. Otherwise you can place the frames with the function Paste/insert Frames... in menu Frame.
Related topicsAnimated brushes and AnimPainting