The WASD Query facility provides real-time searching of plain-text and HTML
documents. It is a simple-string search, not a REGEX-style search, although it
may contain the wildcard characters "*", matching zero or more
characters, and "%", matching any single character. (When no wildcard
characters delimit the search string it behaves as if "*" characters
were present.) It is designed to provide a simple mechanism for locating
documents containing a keyword, not for document analysis.
Further information
Search WASD documentation
Search source code