[TYPO3] "index_stat_search" and "index_stat_word"?

[Nate Russell]

Nate Russell wrote:
> Hello,
> 
> What are the fields "index_stat_search" and "index_stat_word"? I know 
> they have something to do with the index search extension. Can I empty 
> them without my site search functions being adversely affected?
> 
> Thanks,
> Nate

Any tips on this? I looked through the docs for the Indexed search 
extension but these db fields aren't even mentioned.

What exactly are they used for?

Nate