How to find a hidden stings in exported .xliff from Crowdin?

So let’s imagine next

Some of my translators have no internet. And I decided to use offline translation, and with it my files are converted to xliff and go to the translators so they translate them offline

The question is, how hidden stings in Crowdin are marked in xliff? How translator know that this is hidden stings and they shouldnt be translated at all?

a hidden string will looks like:

<trans-unit id="1111" translate="no">




In other words, search for <trans-unit id=“Id(111111)” translate=“no”>