shortcut (key) to show desktop

hi,

how to show the desktop. i know about the key configuration file, but i 
don't know how to tell icewm to show the desktop.

thanks!

------------------------------------------------------------------------------
Virtualization & Cloud Management Using Capacity Planning
Cloud computing makes use of virtualization - but cloud computing 
also focuses on allowing computing to be delivered as a service.
http://www.accelacomm.com/jaw/sfnl/114/51521223/