A slot is a container into which a Freeframe plugin can be loaded. Plugin slots are represented by tabs along the top of FFRend's main window. To insert a slot, use Edit/Insert, or the Ins key. To delete a slot, use Edit/Delete, or the Del key. Plugins can also be inserted and deleted using the plugin context menu, which is displayed when you right-click on a tab.
Only one plugin slot can be viewed at a time. This slot is referred to as the selected plugin. To select a slot, left-click on its tab.
A plugin slot can be cut or copied to the clipboard, and then pasted to a different project, or elsewhere within the same project, using the standard Edit commands, or the plugin context menu.