AutoFormatMatchParentheses Property
True if improperly paired parentheses are corrected when Microsoft Word formats a document or range automatically. Read/write Boolean.
expression.AutoFormatMatchParentheses
expression Required. An expression that returns an Options object.
Example
This example sets Microsoft Word to automatically correct pairs of parentheses, and then it formats the current selection.
Options.AutoFormatMatchParentheses = True
Selection.Range.AutoFormat