Sheet Printer Settings - Edit Custom Fields

[Kevin -]

Is there a way to programmatically access the custom fields in the Sheets print settings using Apps Script? I need access to the 3 header fields that appear after clicking Headers & Footers, EDIT CUSTOM FIELDS in the Google Sheet printer sidebar.

[Clark Lind]

I don't think so. Most or all of the "print" functions are at the Browser level, and Apps script can't access the browser window object because it is sandboxed.