I'm working on my first addon and it's going pretty good so far. What's always difficult for me is the design stuff. It gives me a headache. Are there any references available to learn all the template vars, conditionals etc...? I put a basic app page up but how do I add a sidebar on the left. I need to make a category list. I looked at other mods that have something similar but I don't see how they add their sidebar. I tried. <xen:sidebar> but that just adds the default sidebar on the right with the user block. So if anyone has any pointers it would be appreciated. There doesn't seem to be xenforo code reference anywhere. Or I am just blind.