Supplies the format pane body for a kind of movable content, in place of the one its module carries, without touching the kind's renderer. This is how a host with its own widgets gives a built-in kind a pane.
The content type.
Resolves the body; called once, when the kind's slots are first asked for.
A function that removes the registration.
Supplies the format pane body for a kind of movable content, in place of the one its module carries, without touching the kind's renderer. This is how a host with its own widgets gives a built-in kind a pane.