Workspace
You should become familiar with these window elements:
The most important elements are the sprite editor, the timeline, the color bar, and the preview window. Other familiar elements are the menu bar and the tool bar. The status bar also gives you valuable information about the current sprite.
The timeline is not visible by default, you can make it visible with the View > Timeline menu option or Tab key. (It also pops up automatically when you add a new frame or a new layer.)
Drag and drop tabs
You can drag-and-drop tabs to any side of the sprite editor window or duplicate them using the Ctrl or Alt keys along with the Left Mouse Button:
SEE ALSO
Color Bar | Context Bar | Sprite Editor | Status Bar | Tabs | Timeline | Tool Bar | Menu Bar