The loop, which consists in repeating subsequent iterations for all elements (items) of the selected data aggregate- Array or List.
Before proceeding to the next iteration, assigns value of the next element to the control variable.
The name of the control variable can be changed. In the second textbox a name of Array/List should be placed. You have to specify the type of data stored in the given Array/List. Default is Object, but it can be changed to e.g. Int32 or String.
In Body section should be specified activities, that will be executed for each item.