Pretty new to mac programming and I was trying to make a sidebar that looks like the one in iTunes and finder in Leopard but could not see anything in Interface Builder 3 that looked like it would do the trick. Lines... vertical split view (although this has a dot between panes which I don't want)? Or would you just have to write this yourself using a Custom View? I am just surprised if this is the case because I would have thought other people would want to create apps that are stylistically similar to ones that ship with the OS. Am I missing something?