Optionaleditablefalse: read-only to the user. It still selects, copies and duplicates,
but nothing moves, reshapes, restyles, hides, locks, cuts, deletes or
regroups it, and undo and redo never touch it or the group it is in.
Optionallistedfalse: left out of the object inventory (ChartObjects) and every panel built on it.
Optionalpersistentfalse: transient. Left out of toJSON, and so out of the chart state
and every saved layout, while it renders and undoes as usual in the
session. A restore replaces it with what was saved.
Optionalselectablefalse: never joins the selection, whoever asks. A click passes through
to what lies under it, and nothing hovers, drags or selects it.
What a host allows the user to do with one drawing. The flags are independent of one another and of
locked, and each defaults to true, so a drawing without a policy behaves exactly as one did before policies existed. A copy (paste, duplicate) never inherits a policy: it is the user's own drawing.selectable,persistentandlistedbind every caller.editablerestricts the user: the controller cannot tell a click from a call, so its methods treat every call as the user's unless it passes{ force: true }(seeDrawingEditOptions), which is how the host that placed the drawing moves or retires it. Stacking order (front, back, either side of the series) is outside the policy.