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| description || Sets the description of the variable || Yes | | description || Sets the description of the variable || Yes | ||
|- | |- | ||
| regex || Regular expression (PCRE) that removes the matched characters. | | regex || Regular expression (PCRE) that removes the matched characters. For instance /\D+/ removes all non-numrical characters. || Yes | ||
|- | |- | ||
| value || Default value of variable || No | | value || Default value of variable || No |
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