A start action and a done action represent the start and end of an action sequence.
Creating start and done actions
Creating start and done actions via the Textual Editor
To create start and done actions via the Textual Editor
In the Textual Editor, place the cursor where you want to create the element and declare the keyword:
start for a start action.
done for a done action.
Although start and done appear as element names in the Textual Editor, they are keywords for start and done actions. However, they cannot be named or renamed.