To create opacity masks or wipe out a component of one thing with the overlaying part of a transparent object, transparency defines the blending mode and opacity of objects. Let's try out the transparency effect with a few examples.
The Appearance panel in Illustrator is another extremely useful tool. The Look tab allows you to change and enhance an object's visual appearance. For example, you can use the Appearance panel to add several fills and strokes to a single object or path, as well as various effects.
At the top of the Illustrator window, select Window. In the drop-down menu, choose Appearance. Shift+F6 is the shortcut key for bringing up the Appearance panel.
Simply hold down Option and drag from the filled-in circle to another circle to duplicate the Appearance of the third path to the other routes (2). Do this for any shapes where you'd like the Appearance to be replicated. Appearances will now be consistent.
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