* setting the {{Option|EXPORTER}} option before exporting a database; or
* setting them as [[REST#Parameters|REST]] query parameters.
Due to the wide range of ways how parameters can be supplied, we deliberately ignored one rule of the specification, which requires non-official features to be defined in a non-null namespace URI. In the following, we will indicate which features are specific to our implementation.
The namespace for serialization parameters is statically bound to the {{Code|output}} prefix. This means that it need not (but may) be declared in the query prolog:
<xml>Hi there</xml>
</syntaxhighlight>
Due to the wide range of ways how parameters can be supplied, we deliberately ignored one rule of the specification, which requires non-official features to be defined in a non-null namespace URI. In the following, we will indicate which features are specific to our implementation.
=Parameters=