This is both IOS and MacOS.
I do my studying on an iPad, but I do my edits and additions on MacOS.
But because of the method I use to update, sometimes I tag things on IOS for me to look at/work on with the laptop.
These tags are ASK, AUDIO, and EDIT. I’m guessing ASK and AUDIO are in some way reserved? Because when I look for them in the browser on MacOS (after synch), the EDITs are there but the ASK and AUDIO are not. If I go back to the iPad, the Browse there does find them. (IOddly, ONE of many times, an AUDIO tag did show up on the laptop.)