icon, you can select all of the lines at the same time by clicking each line while holding down the Shift key. This multiple selection enables you to assign all of them a common colour, width or other attribute.
图标后，按住 Shift 键并单击每个线条可同时选择所有线条。使用这种多重选择功能，可以为所有线条指定共同的颜色、宽度或其他属性。