From the course: After Effects CS5 Essential Training

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Working with layers

Working with layers

So, now we've added some assets to our Timeline. And let's talk about these assets a little bit. We saw, in the last movie, how when we added a layer, it covered up the layers beneath them. If we want to temporarily remove an object's visibility, we can go ahead, over here in the Timeline panel, all the way in the upper left-hand corner and click on the Eye icon for a layer. And that removes its visibility. Now we can click that again to bring it back, so it's not anything permanent. We haven't loss anything at all. If we scrub in time with the current time indicator, which is this little yellow playhead with the red vertical line here, which we use to change our position in time, we could see that we have this cool video. We're going to use this later, but for right now, let's just go ahead and leave it off by clicking the Eye icon and leaving that empty there. Now the layer is represented by this bar here. Its horizontal length determines its duration. So, this video layer goes from…

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