I'd like to use several custom keybindings to handle windows more effectively. So I copied the rc.xml from /etc/xdg/openbox/ to ~/.config/openbox/ and edited the relevant (<keyboard>) section of the copy. In order to see how it works, I added the following simplest fragment:
<keybind key="W-Up">
<action name="Maximize"/>
</keybind>
What do I do next? I have tried «openbox --reconfigure», «openbox --configure ~/.config/openbox/rc.xml», «openbox --replace», even combinations of these parameters to no avail (rebooting did not help either).
P. S. I use Lubuntu 20.04 x64.