Run a sequence of nested blocks all at once.
We want to be clear on how independent asynchronous activities are allowed to overlap and still provide reliable results when completed. Now in version 0.1.15.
TOGETHER only works one way. Nested blocks all start at the same time and can't be expected to pass important state between each other.
CLICK TOGETHER SLEEP 4 SLEEP 3 HELLO HELLO world
The TOGETHER block itself does not complete until all of the blocks within it have completed. This, like SLEEP, interrupts the normal sequence within which the TOGETHER block is found.