Keys for the Layers panel

Set layer options

Option-click New button

Delete without confirmation

Option-click Trash button

Apply value and keep text box active

Shift + Enter

Load layer transparency as a selection

Command-click layer thumbnail

Add to current selection

Command + Shift-click layer thumbnail

Subtract from current selection

Command + Option-click layer thumbnail

Intersect with current selection

Command + Shift + Option-click layer thumbnail

Merge visible layers

Command + Shift + E

Create new empty layer with dialog

Option-click New Layer button

Create new layer below target layer

Command-click New Layer button

Activate bottom/top layer

Option + .(period)/ ,(comma)

Select next layer down/up

Option + [ or ]

Move target layer down/up

Command + [ or ]

Merge a copy of all visible layers into target layer

Command + Shift + Option + E

Merge down

Command + E

Copy current layer to layer below

Option + Merge Down command from the panel pop-up menu

Copy all visible layers to active layer

Option + Merge Visible command from the panel pop-up menu

Show/hide all other currently visible layers

Option-click the eye icon

Toggle lock transparency for target layer, or last applied lock

/ (forward slash)

Select all text; temporarily select Type tool

Double-click text layer thumbnail

Create a clipping mask

Option-click the line dividing two layers

Rename layer

Double-click the layer name

Add to layer selection in Layers panel

Shift + Option + [ or]