I'm slightly confused by this wording in the docs: "This allows it to reload code that is followed by blocking instructions such as the infinite loops you can f

I'm slightly confused by this wording in the docs: "This allows it to reload code that is followed by blocking instructions such as the infinite loops you can find in the examples." The examples just have loops where the reloaded function is called in a loop. Is this just updating the definition of the function between calls?