If true, the result of the recipe step will be returned, but not applied.

The index from which to preview a step. This index is used to preview the result of steps that have already been applied, so that the resulting view frame is from earlier in the view frame stack.

A unique identifier for an interactive session that's currently open and ready for work. The action will be performed on this session.

A message indicating the result of performing the action.

The name of the project that was affected by the action.

A unique identifier for the action that was performed.