It creates a database, which is then searched for keywords. This technique has a large speed advantage over searching the whole directory tree of the web site. AND, OR and NEAR boolean keywords, and nested brackets.
Users can search in whole files, in meta-tags or in titles only.
The results are then ranked by the number of keywords found in the file. It should be quite enough for most amateur sites. Installation and maintence are a little more involved than for other internal search engines. However, Xavatoria pays off with speed and flexibility for your visitors. This script uses new Meta tags, such as keywords and description.