For loop with feedback - metadata node question

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Joined: 10月 2021
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Hello!

I´m new in Houdini, and trying to understand what is the propose of the metadata node that you can create when you click on Create Meta Import Node. What is it for? And how does it work?
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Most often I use it in order to read the number of the current iteration I'm in and do *something* with it. It's a detail attribute, there are other attributes you may find handy when doing something inside the loop.
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