DEELX Basic Pattern Syntax: Group

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Group ( )

Use bracket ( ) to enclose sub-expressions into a single element. Sub-expressions in it will be a whole part when it is quantified.

Then, what captured by a group can be retrieved individually.

Remarks

Each group has a number. The rule of number is: count left parenthesis from left to right. The group with number of 0 is the overall expression.