jordantsap: Some things to try –
At the top of /etc/xdg/openbox/lxde-pi-rc.xml it says not to modify that file (in that location) but to copy it to $HOME/.config/openbox, so:
At your home directory (/home/pi or whatever)
cd .config (notice the leading dot – it’s a hidden directory)
sudo mkdir openbox (I needed to create this subdir on my RPi 400)
cd openbox
sudo cp /etc/xdg/openbox/lxde-pi-rc.xml lxde-pi-rc.xml
You should now be able to ls $HOME/.config/openbox/lxde-pi-rc.xml and see the working copy there.
sudo nano $HOME/.config/openbox/lxde-pi-rc.xml to edit.
Some caveats:
Watch your indent spacing; don’t tab – copy a section and edit it might be easier.
If your new text is red it’s in the wrong section. I originally put my keybinding at the end of the file so I could find it easier. Found out later the end is commented for examples.
So I put my keybinding in, rebooted so it would take effect, and it worked. Yeah! Oddly when I brought it up from a cold boot it didn’t – did a different function. Found out this other function was listed later so it was overwriting mine; no idea why it worked right the other day. I commented the ‘duplicate’ – the ‘#’ does not work for this filetype; at the beginning of the section you need <!-- and at the end --> . (Hopefully still works tomorrow!!)