How do I best use Batch Edit/Delete in Multiterm?

I know that Multiterm provides a Batch Edit/Delete feature, but I am not completely sure how to use it.

I know that I can use Batch Edit to change one word for another in all entries. But can I use it to delete all entries in a termbase without deleting the termbase itself?

And can I use it to easily identify duplicated entries? 

Can you point me towards some more documentation on that feature?

Thanks in advance!

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