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| element | Type of element, see the Possible elements page. |
| locator | Locator is a SAHI identifier (like id, full class specification, text). This means that also regular expressions and indexers can be used. For more information see the SAHI documentation and the CWB examples. |
| number | In case of multiple matches, the how manieth element. Number starts at 1 to identify the first match. If no number is given, then 1 is assumed. |
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