An instance of a subclass of interface.
An editor-pane or
The generic function
interface-editor-pane finds the first pane of interface that is an editor-pane, and returns it.
If there is no editor-pane, then
interface-editor-pane may be useful when you need to apply an editor command in the process of some "random" interface, in which case you can use call-editor with the result of
interface-editor-pane (if it is not
CAPI User Guide and Reference Manual (Windows version) - 3 Aug 2017