According to https://stackoverflow.com/a/1091953/ five characters need to be escaped in XML documents under some circumstances:

"   "
'   '
<   &lt;
>   &gt;
&   &amp;

I tried to use Winkey < as a shortcut-key for some command in ~/.config/openbox/lubuntu-rc.xml. I did the following attempts, both failed:

<keybind key="W-<">
 <action name="Execute">
<command>lxterminal</command>
</action>
</keybind>


<keybind key="W-&lt;">
 <action name="Execute">
<command>lxterminal</command>
</action>
</keybind>

How can I use Winkey < as a shortcut-key for some command?