another fluxbox trick

I don't know how to add a "Show Desktop" button to Fluxbox, but I found that it's possible to set up a keystroke that will do the same thing. I added the following line to my ~/.fluxbox/keys file:

Mod4 d :ToggleCmd {ShowDesktop}

After saving the changes to that file, it was necessary to select either "Reconfigure" or "Restart" from the Fluxbox menu. Now, the Mod4 + D keystroke ("Mod4" being the "Windows" key on my keyboard) toggles the "ShowDesktop" command.