"InsertMatchingParentheses"
This token has not been fully integrated into the long-term Wolfram Language, and is subject to change.
"InsertMatchingParentheses"
is a front end token that inserts a pair of matched parentheses at the insertion point.
Details

- "InsertMatchingParentheses" is equivalent to Insert ▶ Typesetting ▶ Matching ( ).
- A typical use is FrontEndExecute[FrontEndToken["InsertMatchingParentheses"]].