The agreement aspect codes how the current utterance unit affects what the participants believe they have agreed to, typically at the task level. These relations occur in contexts where one agent has made some kind of proposal such as a request that the hearer do something, an offer that the speaker do something, or a claim about the world. The current utterance then indicates the other participant's view of the proposal. In general, the agent may explicitly accept or reject all or part of the proposal, or may simply be noncommittal on the proposal, or may leave the proposal open by requesting additional information or exploring the consequences. Assuming the current speaker directly addresses another speaker's proposal, they could respond in one of the five ways shown in figure 5 .
Agreement can apply to cases other than proposals, as shown in the two examples below.
In the first example, utt1 is an Open-option as it simply presents a possible option for solving a problem. Utt2 is still considered an accept though. Accepts can also be used as a response to an information request, as in the example below. Note, utt3 is marked as an answer as discussed later. The Hold tag applies to the case where the participant does not address the proposal but performs an act that leaves the decision open pending further discussion.