FAQ/Old Context Menus
From VFXPedia
Some users may find the windows menus preferable since they are higher contrast and/or easier to navigate using a mouse cursor. They may also appear faster on some systems. The context menu system is a plugin in Fusion 5. If you rename, move or delete the file Fusion:Plugins/eyeon/ContextMenu.plugin and restart Fusion, the standard Windows-style context menus will be used instead. We recommend you rename the plugin to ContextMenu.plugin.dontuse so that it can be re-enabled at a later date.