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Documentation / Mathematica / Front End / Front End Tokens / File Menu /

"Open"

FilledSmallSquare "Open" is a front end token that brings up the file browse dialog box for opening an existing file.

FilledSmallSquare This token is equivalent to the menu command File RightTriangle Open.

FilledSmallSquare To execute a front end token, you typically evaluate a command of the form FrontEndExecute[FrontEndToken[token]].