In the main Postfix configuration file, how are service definitions continued on the next line?

Question

Ed Quinn · Accepted Answer

The following line must begin with white space indentation.

Ed Quinn · Answer

It isn't possible. The service definition must fit on one line.

Ed Quinn · Answer

The initial line must end with a backslash character (\).

Ed Quinn · Answer

The following line must begin with a plus character (+).

Ed Quinn · Answer

The service definition continues on the following lines until all of the required fields are specified.

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