Talk:NBT

I find myself a bit confused regarding the TAG_String name thing. I understand that it is used to identify each tag, but the portion which confuses me is that the article implies that not all tags have this name attached to them, "Note that ONLY Named Tags carry the name and tagType data. Explicitly identified Tags (such as TAG_String above) only contains the payload."

Now, my question is, what is considered a named tag, and what is not?

~Thanks