Execute multiple action blocks concurrently, as separate branches of a fork. The action following the all of action will be reached only when all branches of the all of have been fully executed. All branches of the fork are automatically joined at the termination of the all of action block.
First Of
Execute multiple action blocks concurrently, as separate branches of a fork. The action following the first of action will be reached when any of the branches in the first of has been fully executed. All branches of the fork are automatically joined at the termination of the first of action block.