Recent studies on the analysis of intonational function examine a r a n ~ of materials from cue phrases in monologue (Litman and Hirschberg, 1990) and dialogue (Hirschberg and Litman, 1987; Hockey, 1991) to longer utterances in both monologue and dialogue (McLemore, 1991). Results match specific intonational tunes to certain discourse functions which are more or less well defined. Although these results make a convincing case that intonation does signal a change in discourse structure, the specification of discourse function remains vague. .
