These building blocks are used to start and stop an automation flow.
The Start block is the starting point of all automation flows, is always present and cannot be deleted.
The Pass and Fail blocks are used to explicitly end a case run immediately in a passed or failed state, while the Done block is used to end a case run in a state that is neither. This distinction can be very useful in some test automation scenarios, whereas others may not need it.
Updated January 12th 2018.