They are in no particular order.
Boolean expression searching Searches can be arbitrarily complex using boolean expressions.
The output of a search can easily be tailored to your needs by means of providing HTML templates. Fuzzy searching Searches can be performed using various configurable algorithms. Searching of other file types will be supported in future versions. Keywords can be added to HTML documents Any number of keywords can be added to HTML documents which will not show up when the document is viewed. This is used to make a document more like to be found and also to make it appear higher in the list of matches.