> For the complete documentation index, see [llms.txt](https://docs.siminsights.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.siminsights.com/hyperskill-studio-authoring/state-machine-reference/actions/transition-effect.md).

# Transition Effect

Transition Effect fades the environment scene out and in. Use it to indicate to the user that time has passed, or to hide parts of the simulation 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 the scene back into view. These two effects are usually used together.

**Duration:** How long, in seconds, the effect takes.

**Proceed Without Finishing:** If active, subsequent state actions continue while the effect occurs.