Loop node provides the ability to repeat execution on dedicated nodes group multiple times.
Let’s imagine a scenario where you need to jump to 6 different asteroid belts and make a bookmark on each one. In general, you should create many equals nodes in long construction like this.
But with the Loop node, you can reuse multiple times the short nodes construction. There is how you can solve the task using the Loop node.
Loop nodes could be used together with Continue(LINK) and Break(LINK) nodes.
Other example. That shows how you split a string by comma to the array of strings, and print the array using the Loop Array String node in combination with Message node.