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What does it do?
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ke_search_premium is a TYPO3 extension which extends ke_search with a number
of additional features:

* Custom ranking: values to push results by a fixed value
* Boost keywords: push results by keywords
* Distance based: Search around a location (city, zip), including Google Maps integration
* Did you mean: Suggest correct spellings (only in german)
* Autocomplete: Suggest search terms while typing (based on searches of other users)
* Synonyms: Define synonyms for search terms
* In-word-search: Find search strings inside words
* Remote indexer: Import search results from another TYPO3 website. This feature makes it possible to search two or more TYPO3 websites using one search form.
* Headless: Serve search results via JSON, e.g. for a Progressive Web App
* Sphinx: Faster searching (with very large indexes) with Sphinx (needs additional server setup)