The standard editor commands are available to create and manipulate a selection.

 

Select menu commands:

Select All - selects the entire image (Ctrl+A on Windows, ⌘+A on Mac).

Deselect - cancels the selection (Ctrl+D on Windows, ⌘+D on Mac).

Reselect - restores the previous selection (Ctrl+Shift+D on Windows, ⌘+⇧+D on Mac).

Invert - unselects currently selected parts and selects currently unselected parts (Ctrl+Shift+I on Windows, ⌘+⇧+I on Mac).

Transform Selection - lets transform the selection edges without affecting the image content.

Edit menu commands:

Cut - cuts the selected area of the current layer to the clipboard (Ctrl+X on Windows, ⌘+X on Mac).

Copy - copies the selected area of the current layer to the clipboard (Ctrl+C on Windows, ⌘+C on Mac).

Copy Merged - copies the selected area of merged layers and places it on the clipboard (Ctrl+Shift+C on Windows, ⌘+⇧+C on Mac).

Paste - inserts the contents of the clipboard into a new layer (Ctrl+V on Windows, ⌘+V on Mac).

Erase - removes the selected area of the current layer (Delete).

Layers -> New menu commands:

Layer via Copy - creates a new layer by copying the selected area of the current layer (Ctrl+J on Windows, ⌘+J on Mac).

Layer via Cut - creates a new layer by cutting the selected area of the current layer (Ctrl+Shift+J on Windows, ⌘+⇧+J on Mac).