– You must know the keyboard shortcuts for different actions. For instance, Enter or Return = Show/Hide Options Palette (V5.x only), Double click tool button = Show/Hide Options Palette (V5.x only), F5 = Show/Hide Brushes Palette, F6 = Show/Hide Colour Palette, F7 = Show/Hide Layers Palette, F8 = Show/Hide Info Palette and F9 = Show/Hide Actions Palette.
– Image Courtesy: easy-photoshoptutorials.blogspot.com