日常使う言葉 The content should document narration of short stories, narration of news, information on general topics, simple explanations, brief conversations or pronunciation of words and phrases. Documenting speeches on specialist topics that either require advanced knowledge of the language or include substantial amount of foreign words are not good examples for exposing to the language and therefore should be omitted (instead, topics of general interest that can be considered include summarised information about the language itself, about the country or region it is native to, etc.).
なめらかな表現 The content should be presented by a native speaker of the language, language variety or dialect that is subject to the file.
