Does the plug-in support Korean search?
It should work with Korean because it works with UTF-8 encoding.
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Correct, you can justify the styling of the Smart Excerpt part using CSS block in the WPFTS Pro Settings / Search & Output. Your webmaster can use it. Other parts of the search results page are not accessible for the plugin.
Thank you, works like a charm. Much appreciated!
No, you shouldn't pay. Just get your copy for free and make experiments with it. If you don't like what happens - just remove it and that's it. No need to pay or cancel something.