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SetOptions[s, name1->value1, name2->value2, ...]
sets the specified default options for a symbol s.
SetOptions[stream, ...] or SetOptions["name", ...]
sets options associated with a particular stream.
SetOptions[object, ...]
sets options associated with an external object such as a NotebookObject.
  • SetOptions is equivalent to an assignment which redefines certain elements of the list Options[s] of default options.
  • If you use SetOptions[NotebookObject[...], ...] the kernel will send a request to the front end which will immediately make the change specified.
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