The Foreach control node enable to iterate over all the items of a given input container in order.
The node takes a container as input and executes the body blocks until reaching the end of this container. For each iteration, users can retrieve the container itself, its size, the current item and the index of the current iteration.
During execution, the condition is firstly tested, then if it is valid then the body composition is executed and eventually, the incrmental process is performed.
The las value of the loop counter can be used further in the composition thanks to i_end port.