The term 'และเมื่อ (láe mʉ̂a)' is used to join two events or actions together, implying the order of occurrence or the implication of the first action to the second. Similar to the English 'and when' or 'and then'. It is typically placed at the beginning of the second clause, denoting the following action or event. It can be used in various contexts, whether expressing the sequence of activities or causative effects between two actions.