The Flow Engine contains run control buttons that provide convenient access to the Flow menu commands. Click once on a run control button to execute a command.
If you position the mouse pointer over a run control button, a short description, called a tool tip, appears next to the button.
Use this command to start the Flow Engine. It is equivalent to the Flow 
Run command.
Use this command to run the next operation in the processing flow. It is equivalent to the Flow Step command.
Use this command to go back one step in the processing flow. It is equivalent to the Flow Step Back command.
The Abort button aborts the currently running process. All data from the currently running process is lost. It is equivalent to the Flow Abort command.
