How to import massively taxonomy terms? I have taxonomy terms installed and there I have article categories listed.

I have a lot of categories and articles. Now I need to import more categories from .txt file.

What is the best way to do this? I don't want to create these categories one by one.
I use in every of my projects the Taxonomy Manager module, among its features you can find:


mass adding of new terms
dynamic treeview
mass deleting
moving of terms in hierarchies