From Wikimedia Incubator
|Multiple Languages Wiktionary
This test has an invalid ISO 639 language code, so it has been deleted.
|This test wiki has an invalid ISO 639 language code, so it has been deleted. There could be an XML file available (ask here) which can be transferred to a non-Wikimedia wiki.|
|Language||Test wiki content
The language code "mul" is valid, strictly speaking, but a multilingual Wiktionary is not feasible.