
Props: This layer is used to display content such as 'bugs' in a corner of the output, but anything that can be added to a slide can be shown anywhere on screen.Messages: This layer is used to quickly send text or timers to the output.Mask layer: This layer is used to mask parts of the presentation, creating a custom shape or transparent areas.

More information on that, can be found in the Audience Looks Article. These Layers are controlled in the Looks window, found in Screens>Edit Looks from the Menu bar.

These layers can trigger slide content, media content, as well as other various generated content in ProPresenter to different Audience Screens, or create a stacked look on a single Audience Screen.

ProPresenter's output is made up of 8 fixed layers.
