= Named Variable =

A named variable is tag in form of {{{$nameOfVariable}}}. A variable name can contain alphanumeric symbols, dots or underscores.[[BR]]
The variable valuation must be placed on a newline following the rule in following format:

{{{$nameOfVariable[}}}[wiki:Attribute attribute]]{{{: <list of values (constraints) separated by whitespace>}}}

For a variable, only the first following valuation applies. This enables sharing same variable names across the rules.[[BR]]
A variable valuation can consist of several constraints listed each on a new line which are taken in conjunction (logical and).[[BR]]
Negative constraints can be created using the ''not'' [wiki:Keyword keyword].

Example: 

{{{$CONJUCTION[word]: for and nor but or yet so}}} -- will match any of the listed words.[[BR]]
{{{$NOTNO[word not]: no}}} -- will match any word except of ''no''.