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To find information about a topic, simply type in a few keywords or phrases.

Enclose phrases in double quotes, as in, "double quotes".

You may prefix each keyword to fine-tune your search.

word prefix	symbol prefix	meaning
and	+	require this keyword
or	none	prefer this keyword
not	-	exclude this keyword

The asterisk [*] character provides limited wildcard character matching.

Most matches are case-insensitive but you can change that too.

The capabilities of our search engine are best shown with a few examples:

Translated: require CGI, require scripting

Finds "CGI Scripting", "CGI scripting", and "scripting of type CGI".
Does not find the lowercase "cgi scripting", nor the abbreviated "CGI script".

Translated: forbid CGI, require scripts

Finds "Perl scripts", "Hollywood scripts", and lowercase "cgi scripts".
Does not find "CGI definitions" nor "CGI scripts".

Translated: prefer CGI, require scripts

Finds "Perl scripts", "CGI scripts", and "CGI Scripts".
Documents with both terms appear higher in the list.

Translated: require the phrase "CGI scripts"

Finds "CGI scripts".
Does not find "CGI Scripts" nor "scripts of type CGI".

Translated: require cgi (case insensitive), require words starting with "script"

Finds "CGI scripts", "cgi scripting", "Cgi scripter".
The asterisk is a wildcard representing any four or fewer characters.

Translated: require Venus (case sensitive), require pictures, forbid planet, prefer images

First lists "pictures and images of Venus", then "Venus pictures".
Does not list lowercase "venus picture", nor forbidden "picture of planet Venus".

Translated: ignores common words like where, is, and the - requires words containing "frog"

Finds "frog", "frogleg", and "bullfrog".
To suppress the ignore feature, use quotes, as in "Where is the *frog*?".

Note on case sensitivity - only words or phrases containing an upper case character will be treated as case sensitive.  A search on "usa" will match "Usa", "USA", and "usA", while the term "USA" matches only its uppercase version.

The asterisk is a powerful search tool, but has some limitations. It cannot span words - that is, the query "powerfu*earch" would not match the first sentence of this paragraph - and it can represent at most four letters or numbers. To avoid overly broad searches, the asterisk can only be used in words or phrases which have at least three alpha-numeric characters. A search for "th*" would be ignored.

The Xavatoria Search Engine is Copyright 1997 by Fluid Dynamics.
Visit the Fluid Dynamics Search Page for help files and most recent version.

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