This small tip shows how you can use Opus to rearrange the context menus you see when right-clicking files. Opus allows you to add, remove and move items, including those put there by other applications.
A new and related function has been added to Opus since the tip was made. If you hide 3rd party context menu items you can use this command to show them all in the same place (eg a submenu) without having to list each one explicitly.
Filetype CONTEXTMENU CONTEXTOPTIONS=windowsonly
If you are having trouble finding a Context Menu's CLSID in the registry you may find it easier to enable Context Menu Debugging (ContextMenuDbg) so that Opus prints out the CLSIDs of all context menu handlers that it invokes. To enable ContextMenuDbg, follow the steps in the FAQ on diagnosing a crash due to a 3rd party context menu handler, under the heading Finding The Culprit.