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Save file as:
If you have saved a file to Google Drive, you can open it here:
Your browser does not support iframes.
The "Submit" button will submit the form in the inline frame.
Since the sandbox attribute is set to an empty string (""), the submission of the form in the inline frame will be blocked.
Add "allow-forms" to the sandbox attribute, to allow form submission.
Note: The sandbox attribute is not supported in Internet Explorer 9 and earlier versions, or in Opera 12 and earlier.