How to clear search bar?

[dadu]

Hi All,
For the life of me, I can't find this answer: I have the categories window floating panel and I have the search panel showing at the bottom of it.
The drop-down window for the search panel has many historical misspelled items I've search for. How do I clear the search history in that drop down window??

[Mario]

When new items are added, old are removed automatically. Keep adding new entries, and the misspelled entries will vanish.
I did not bother adding separate 'clear history' commands for each and every search bar.