Typically, the last topic discussed is assumed to be the current topic, thus there is no need to explicitly state it. However, when I wish to revisit a previous topic, it becomes essential to refer back to its history. In such cases, the current topic may not necessarily be the most recent one. Therefore, a pointer is required to indicate the current topic that is being discussed.
Typically, the last topic discussed is assumed to be the current topic, thus there is no need to explicitly state it. However, when I wish to revisit a previous topic, it becomes essential to refer back to its history. In such cases, the current topic may not necessarily be the most recent one. Therefore, a pointer is required to indicate the current topic that is being discussed.