Adobe Photoshop CC 2014 v.14.xx - Manual (Page 341)

Paste Into or Paste Outside Pastes a copied selection into or outside another selection in any image. The source selection is pasted onto a new
layer, and the destination selection border is converted into a layer mask.
Copy a selection
1. Select the area you want to copy.
2. Choose Edit > Copy, or Edit > Copy Merged.
Copy a selection while dragging
1. Select the Move tool , or hold down Ctrl (Windows) or Command (Mac OS) to activate the Move tool.
2. Hold down Alt (Windows) or Option (Mac OS), and drag the selection you want to copy and move.
When copying between images, drag the selection from the active image window into the destination image window. If nothing is selected,
the entire active layer is copied. As you drag the selection over another image window, a border highlights the window if you can drop the
selection into it.
Dragging a selection into another image
Create multiple copies of a selection within an image
1. Select the Move tool , or hold down Ctrl (Windows) or Command (Mac OS) to activate the Move tool.
2. Copy the selection:
Hold down Alt (Windows) or Option (Mac OS), and drag the selection.
To copy the selection and offset the duplicate by 1 pixel, hold down Alt or Option, and press an arrow key.
To copy the selection and offset the duplicate by 10 pixels, press Alt+Shift (Windows) or Option+Shift (Mac OS), and press an arrow
key.
As long as you hold down Alt or Option, each press of an arrow key creates a copy of the selection and offsets it by the specified
distance from the last duplicate. In this case, the copy is made on the same layer.
Paste one selection into or outside another
1. Cut or copy the part of the image you want to paste.
2. In the same image or another, select the area you want to paste into or outside.
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