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Wow, I didn't expect such a good answer honestly. You explained it perfectly and even included the key shortcut that I have been trying to remember for the past 2 years. By the way, you're right about that file layering being ugly as sin, it's a file a past employee started on and now is passed onto me..and of course my boss has nothing better to do with his time than make sure I'm not wasting an extra minute of mine.
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Wow, I didn't expect such a good answer honestly. You explained it perfectly and even included the key shortcut that I have been trying to remember for the past 2 years. By the way, you're right about that file layering being ugly as sin, it's a file a past employee started on and now is passed onto me..and of course my boss has nothing better to do with his time than make sure I'm not wasting an extra minute of mine.

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It's not a group layer with a folder icon if that was your first thought, it's an inset layer with a downwards pointing arrow in front of it above a dominant normal (not inset) layer. But how do you make these special layers? what do they do or mean exactly? what are they even referred as for that matter?<br />
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I enclosed a screenshot of a file I saw this on and if you look in the layers window on the right you'll see what I'm talking about. I have spent far too long trying to figure out how to do that, or at least figure out what it indicates. I even looked through my CS3 photoshop bible only to see zero mentioning of this. <br />
Has anyone here worked with these before? <br />
<a href="https://filedb.experts-exchange.com/incoming/2009/02_w07/105856/wtf.jpg" target="_blank" class="file-inline" title="A screenshot with the odd arrow layers seen on the right. (713 KB)"><svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path d="M67.508 468.467c-58.005-58.013-58.016-151.92 0-209.943l225.011-225.04c44.643-44.645 117.279-44.645 161.92 0 44.743 44.749 44.753 117.186 0 161.944l-189.465 189.49c-31.41 31.413-82.518 31.412-113.926.001-31.479-31.482-31.49-82.453 0-113.944L311.51 110.491c4.687-4.687 12.286-4.687 16.972 0l16.967 16.971c4.685 4.686 4.685 12.283 0 16.969L184.983 304.917c-12.724 12.724-12.73 33.328 0 46.058 12.696 12.697 33.356 12.699 46.054-.001l189.465-189.489c25.987-25.989 25.994-68.06.001-94.056-25.931-25.934-68.119-25.932-94.049 0l-225.01 225.039c-39.249 39.252-39.258 102.795-.001 142.057 39.285 39.29 102.885 39.287 142.162-.028A739446.174 739446.174 0 0 1 439.497 238.49c4.686-4.687 12.282-4.684 16.969.004l16.967 16.971c4.685 4.686 4.689 12.279.004 16.965a755654.128 755654.128 0 0 0-195.881 195.996c-58.034 58.092-152.004 58.093-210.048.041z"/></svg>wtf.jpg</a>
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A screenshot with the odd arrow layers seen on the right.

wtf.jpg

It's not a group layer with a folder icon if that was your first thought, it's an inset layer with a downwards pointing arrow in front of it above a dominant normal (not inset) layer. But how do you make these special layers? what do they do or mean exactly? what are they even referred as for that matter?

I enclosed a screenshot of a file I saw this on and if you look in the layers window on the right you'll see what I'm talking about. I have spent far too long trying to figure out how to do that, or at least figure out what it indicates. I even looked through my CS3 photoshop bible only to see zero mentioning of this. 
Has anyone here worked with these before? 

What does a layer with a special arrow in front mean?

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