Advanced searches within this online help

This online help uses the Apache Lucene information retrieval library for its built-in search engine. Lucence features a powerful query syntax for best search results.

Search type
Syntax and characters
Explanation / example
Wildcard for a single character matches
"te?t" returns: text, test
Wildcard for matches of 0 or more characters
"tet* " returns: tests, testing
Boolean operators:
Must be present
Grouping, Boolean logic combined with brackets
(term operator term)
(test !text)

Further information and links