Adobe 29180155 - Photoshop Elements 4.0 Tutorial page 37

Keys for showing or hiding panels (expert mode)
This partial list includes the most helpful shortcuts. You'll find additional shortcuts in menu commands and tool tips.
Result
Open Help
Show/Hide Tool Options
Show/Hide Photo Bin
Show/Hide Effects panel
Show/Hide Graphics panel
Show/Hide Info panel
Show/Hide Histogram panel
Show/Hide History panel
Show/Hide Layers panel
Show/Hide Navigator panel
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Windows
F1
F4
F5
F6
F7
F8
F9
F10
F11
F12
Mac OS
command+ ?
F4
F5
F6
F7
F8
Option + F9
Option + F10
Option + F11
Option + F12