You can also use the mouse to split the window horizontally or vertically. To do this, drag the thick black line located directly above the vertical scrollbar or directly to the right of the horizontal scrollbar into the window. A thick black line will show where the window is split.
也可以使用鼠标水平或垂直拆分窗口。为此，可将位于垂直滚动条顶端或水平滚动条右端的黑色粗线拖动到窗口中。黑色粗线表示拆分窗口的位置。