Parentheses are used to surround sub-expressions and sub-tags. They affect the order of operation which Lasso uses to determine the result of an expression.

Any sub-expression within parentheses is evaluated as a unit and then the result is returned to the enclosing expression. 8 * 4 + 5 returns 37 since the multiplication operation is performed first, but 8 * (4 + 5) returns 160 since the parentheses force the addition to be performed first.

Parenthese should be used to group tag names with their parameters. In this tag [Output: Field: 'Name', -EncodeURL] the encoding keyword -EncodeURL is applied to the [Output] tag. In order to force it to be applied to the [Field] tag parenthese can be used as follows [Output: (Field: 'Name', -EncodeURL)]

[TagName: (SubTagName: Tag Parameters)]