Flow Control
The functions under the orange tab at the bottom of the programming window in Lego Mindstorm all provide structure that modify the order that functions are run in. Normally all functions are run in series (on after another) beginning at the Start functions. Flow Control functions can change where to start, delay moving to the next function, or change what the next function will be.
Start
Start
Wait
Wait
Loop
Loop
Switch
Switch
Loop Interrupt
Loop Interrupt