A variable for which an end user can set an initial value when generating a report. The parameter value affects the report output. For example, if the value of a Summary parameter is True, then the report is a summary. If the value is False, then the report shows all the details. A report design can also use a static parameter to filter data rows returned by the data source. In this use, the value must match the syntax required by the data source’s query language and must not contain Query by Example (QBE) syntax.