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The only difference between these two methods is the whether the XML is passed through the Internationalization (i18n) transformer. The first one (using the DRI/debug directive) resolves them to their corresponding string values, while the second method (using the ?XML parameter) returns raw DRI XML with <i18n:text> tags still unprocessed, while the second one resolves them to their corresponding string values. In general, using the DRI/ directive allows for easier navigation though the DRI document, although the ?XML is still useful when access to the raw DRI is needed.
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