[ JDK VERSION : 1.5.0_05 ]
There is currently no way to edit the default accellerator key bindings for the Output window. They do not show up anywhere underneath Keymap in the options dialog.
This is a real pain in the rear on OS X because the default key binding for Wrap text (Command W) is also the key binding for close window. So you can be happily using Command W to close your editor windows, and then find yourself wondering why it doesn't work in the Output window.
Also, please see bug 68936
a duplicate of #58126. It's not possible to change keybindings in output window.
*** This issue has been marked as a duplicate of 58126 ***