Answers to Photoshop questions

Layer Stamps

A keyboard command that merges the contents of one or more layers or Layer Sets to another layer, usually to the layer below. The merging into the target layer leaves the other layers untouched. Choose Command+Option+E (Mac) or Control+Alt+E (Win).

Layer Sets

A Layer submenu command that creates a folder that can manage multiple individual layers by grouping them into a directory. Choose Layer > New > Layer Set or in the layers palette click-down on a layer, hold and drag it into a layer set folder to organize multiple layers.

Scratch sizes

The amount of the Random Access Memory that is set for Photoshop to use before the computer uses scratch disk. The display is located in the small field window at the lower left of the image. Window users may need to Choose > View Status first. Click down and hold on the right-sided triangle drop-down menu next to the number field area to reveal it and the two numbers separated by a slash. Numbers on the left show the base file size with no channels or layers added. Numbers on the right show the current file size, including layers, channels and any other open images. To set the scratch size choose Edit > Preferences > Plug-Ins and Scratch Size.

Clipping Groups

A masking technique that uses the contents of one layer to mask the contents of another layer. Image information of the upper layer appears only where non-transparent (opaque) pixels exist in the base layer or the layer beneath. Select Layer > Group with Previous. Select Layer > Group Linked to join all adjacent linked layers, automatically making the lowest linked layer the clipping or base layer.

Clipping Layer

The base layer that is used to clip the layer or layers above it in a Clipping Group. Where the clip layer is opaque the layer above is visible and vice-versa.

Clipping Paths

Stores the outline of an object-oriented shape in the Paths palette whenever the layer it was made on is active. The outline of a shape can be changed by editing the layer clipping path with the Direct Selection tool.

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