A step that clears a scene. A setup must be specified.
A step that only happens if a condition is true. A script must be specified.
A step that acts as a decision. A setup must be specified.
A step that signifies an end. A setup must be specified.
A step that contains an interactive. A setup must be specified.
A step that provides a pause. A setup must be specified.
A step that acts as a progression. A setup must be specified.