Python NXOpen UDF

[Low Level User]

Hello All,

Can I use python to use NXOpen.UF.ModlGeneral.AskFeaturesOfUdf?
How to use it?
Using it for copy paste builder. My program works great and select multiply new parents and paste multiply UDF's in one go. The only problem I have now is that I think i need to select all the features in the UDF not just the one in the tree and NXOpen.UF.ModlGeneral.AskFeaturesOfUdf is the only way ive seen, just have no idea how to use it.

How do I tag a feature?
What is a tag?

Any tiny bit of info helps as im very new.

Thanks.