This is the timeline:
It shows the layers and frames of the active sprite. You can press the
Tab
key to show or hide it. Also it appears automatically when you
create a new Frame or Layer. (This behavior can be disable
from Edit > Options > General > Show timeline automatically.)
You can use Layer > New Layer menu (Shift+N
) to create new layers
or Frame > New Frame menu (Alt+N
) to add frames.
Cels:
You can copy and paste layers, frames, or cels between different documents using Edit > Copy and Edit > Paste.
SEE ALSO