I couldn't find "break" block to exit from While loop?

As title.
Why?

Welcome Alex.

break

When looping using the for range, for each, or while blocks it is sometimes useful to be able to exit the loop early. The break allows you to escape the loop. When executed, this will exit the loop and continue the app with the statements that occur after the loop in the blocks.

https://ai2.appinventor.mit.edu/reference/blocks/control.html