# Transition Effect Transition effects allow you to fade in and out the environment scene. This can be used indicate to the user that time has passed or hiding parts of the simulation that you do not want the user to see, such as environment setup or teardown actions. Effect: **Fade Out** turns the screen black. **Fade In** removes the fade out effect and brings back the scene to view. Usually, these actions are used together. Duration: How long in seconds should the effect take. Proceed Without Finishing: If active, subsequent state actions will continue while the effect occurs. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.siminsights.com/authoring-a-simulation/state-machine/actions/transition-effect.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.