1·The subject may merit a brief explanatory note.
这题目也许要个简明的注释。
—— 《新英汉大辞典》
2·You can choose to add speaking bleb, spotlight and explanatory note these 3 pushbutton undertake operating.
你可以选择增加讲话气泡、聚光灯和注释这三个按钮进行操作。