During replay or automated execution, a session can return a prompt with a format that Spirent iTest does not expect (for example, the prompt might include an timestamp or error message or might reproduce a failed command as a hint for correcting the command text). In this situation, Spirent iTest waits “forever” for a defined prompt that will never come. To enable the steps to replay without interruption in the future, you can “teach” Spirent iTest about the new prompt format by adding a prompt definition. Spirent iTest will recognize the prompt from then on. See “Learning prompts during automated execution” in the oline help for details.