What happens to the original field name when a field alias is created?

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Lin Sun · Accepted Answer

The original field name is not affected by the creation of a field alias.

Lin Sun · Answer

The original field name is replaced by the field alias within the index.

Lin Sun · Answer

The original field name is italicized to indicate that it is not an alias.

Lin Sun · Answer

The original field name still exists in the index but is not visible to the user at search time.

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