I recently moved from Windows to OS X and transferred my PHPStorm preferences in the process. On my Windows machine, I remember I had bind ctrl + w to close the current window. This is what PHPStorm listens for on my Mac too. I'd like to be more consistent in how I close my sub-windows in my applications and want to change this binding to cmd + w. I can't seem to find where in the "Keymaps" section this binding is set at. Does anyone know the name of this action?
Have you tried searching your keymap for "Close" ? This will narrow list of possible actions a lot.
In any case: Preferences | Keymap
Action: Main Menu | Window | Editor Tabs | Close