Viewer: Exit full screen mode with Esc key

If you would like the Esc key in the image viewer to exit full screen mode, instead of closing the viewer, while still closing the viewer when in windowed mode:

Go to Settings > Customize Toolbars > Keys and create a new Viewer Hotkey:

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Since Esc is special, you'll need to use the menu on the right of the hotkey field to specify it:

Click Advanced in the command editor to put it into multi-line mode.

Use this as the command:

@if:Show VIEWERCMD=fullscreen
Show VIEWERCMD=fullscreen
@if:else
Show VIEWERCMD=close