Photoshop Layer Creation
Here are a couple quick tips on Adobe Photoshop. It is fairly obvious that clicking the little layer icon on the Layers palette creates a new layer. But, if you hold down the Alt key while clicking, the dialog box pops up allowing you to type in a name for it.
Sliding a layer name from the list onto the layer icon creates a duplicate of that layer. Similarly, holding down the Alt key while sliding a layer name onto it, pops up the dialog box allowing you to enter a name for the duplicate.