Discourse markers can have more than one function.For example,the main function of well as a discourse marker is to indicate that the speaker is thinking about things and it can be used to indicate that what has just been said needs to be modified or qualified.Discourse markers can have more than one function. For example, the main function of well as a discourse marker is to indicate that the speaker is thinking about things and it can be used to indicate that what has just been said needs to be modified or qualified