4.9 User Interface: Preview (Composition Builder v.5.0)
The Preview window renders a composition in realtime and includes all components except the Just Out engine output, which will be playing out-the element in the video track once it goes On Air.
Send Trigger (lower left): Continues the composition if a stop frame has been reached.
State (lower middle): Shows the current status of the Preview.
Reload (lower right): Rewind the Preview.